400494640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:340

約数の個数: 240

約数和(自身を含む): 1211172480

約数和(自身を除く): 810677840

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 29, 35, 40, 49, 52, 56, 58, 65, 70, 80, 91, 98, 104, 112, 116, 130, 140, 145, 182, 196, 203, 208, 232, 245, 260, 271, 280, 290, 364, 377, 392, 406, 455, 464, 490, 520, 542, 560, 580, 637, 728, 754, 784, 812, 910, 980, 1015, 1040, 1084, 1160, 1274, 1355, 1421, 1456, 1508, 1624, 1820, 1885, 1897, 1960, 2030, 2168, 2320, 2548, 2639, 2710, 2842, 3016, 3185, 3248, 3523, 3640, 3770, 3794, 3920, 4060, 4336, 5096, 5278, 5420, 5684, 6032, 6370, 7046, 7105, 7280, 7540, 7588, 7859, 8120, 9485, 10192, 10556, 10840, 11368, 12740, 13195, 13279, 14092, 14210, 15080, 15176, 15718, 16240, 17615, 18473, 18970, 21112, 21680, 22736, 24661, 25480, 26390, 26558, 28184, 28420, 30160, 30352, 31436, 35230, 36946, 37940, 39295, 42224, 49322, 50960, 52780, 53116, 55013, 56368, 56840, 62872, 66395, 70460, 73892, 75880, 78590, 92365, 98644, 102167, 105560, 106232, 110026, 113680, 123305, 125744, 132790, 140920, 147784, 151760, 157180, 172627, 184730, 197288, 204334, 211120, 212464, 220052, 246610, 265580, 275065, 281840, 295568, 314360, 345254, 369460, 385091, 394576, 408668, 440104, 493220, 510835, 531160, 550130, 628720, 690508, 715169, 738920, 770182, 817336, 863135, 880208, 986440, 1021670, 1062320, 1100260, 1381016, 1430338, 1477840, 1540364, 1634672, 1726270, 1925455, 1972880, 2043340, 2200520, 2762032, 2860676, 3080728, 3452540, 3575845, 3850910, 4086680, 4401040, 5006183, 5721352, 6161456, 6905080, 7151690, 7701820, 8173360, 10012366, 11442704, 13810160, 14303380, 15403640, 20024732, 25030915, 28606760, 30807280, 40049464, 50061830, 57213520, 80098928, 100123660, 200247320, 400494640]

約数ペア:

[(1, 400494640), (2, 200247320), (4, 100123660), (5, 80098928), (7, 57213520), (8, 50061830), (10, 40049464), (13, 30807280), (14, 28606760), (16, 25030915), (20, 20024732), (26, 15403640), (28, 14303380), (29, 13810160), (35, 11442704), (40, 10012366), (49, 8173360), (52, 7701820), (56, 7151690), (58, 6905080), (65, 6161456), (70, 5721352), (80, 5006183), (91, 4401040), (98, 4086680), (104, 3850910), (112, 3575845), (116, 3452540), (130, 3080728), (140, 2860676), (145, 2762032), (182, 2200520), (196, 2043340), (203, 1972880), (208, 1925455), (232, 1726270), (245, 1634672), (260, 1540364), (271, 1477840), (280, 1430338), (290, 1381016), (364, 1100260), (377, 1062320), (392, 1021670), (406, 986440), (455, 880208), (464, 863135), (490, 817336), (520, 770182), (542, 738920), (560, 715169), (580, 690508), (637, 628720), (728, 550130), (754, 531160), (784, 510835), (812, 493220), (910, 440104), (980, 408668), (1015, 394576), (1040, 385091), (1084, 369460), (1160, 345254), (1274, 314360), (1355, 295568), (1421, 281840), (1456, 275065), (1508, 265580), (1624, 246610), (1820, 220052), (1885, 212464), (1897, 211120), (1960, 204334), (2030, 197288), (2168, 184730), (2320, 172627), (2548, 157180), (2639, 151760), (2710, 147784), (2842, 140920), (3016, 132790), (3185, 125744), (3248, 123305), (3523, 113680), (3640, 110026), (3770, 106232), (3794, 105560), (3920, 102167), (4060, 98644), (4336, 92365), (5096, 78590), (5278, 75880), (5420, 73892), (5684, 70460), (6032, 66395), (6370, 62872), (7046, 56840), (7105, 56368), (7280, 55013), (7540, 53116), (7588, 52780), (7859, 50960), (8120, 49322), (9485, 42224), (10192, 39295), (10556, 37940), (10840, 36946), (11368, 35230), (12740, 31436), (13195, 30352), (13279, 30160), (14092, 28420), (14210, 28184), (15080, 26558), (15176, 26390), (15718, 25480), (16240, 24661), (17615, 22736), (18473, 21680), (18970, 21112)]