21680160

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 144

約数和(自身を含む): 72067968

約数和(自身を除く): 50387808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 47, 48, 60, 62, 80, 93, 94, 96, 120, 124, 141, 155, 160, 186, 188, 235, 240, 248, 282, 310, 372, 376, 465, 470, 480, 496, 564, 620, 705, 744, 752, 930, 940, 961, 992, 1128, 1240, 1410, 1457, 1488, 1504, 1860, 1880, 1922, 2256, 2480, 2820, 2883, 2914, 2976, 3720, 3760, 3844, 4371, 4512, 4805, 4960, 5640, 5766, 5828, 7285, 7440, 7520, 7688, 8742, 9610, 11280, 11532, 11656, 14415, 14570, 14880, 15376, 17484, 19220, 21855, 22560, 23064, 23312, 28830, 29140, 30752, 34968, 38440, 43710, 45167, 46128, 46624, 57660, 58280, 69936, 76880, 87420, 90334, 92256, 115320, 116560, 135501, 139872, 153760, 174840, 180668, 225835, 230640, 233120, 271002, 349680, 361336, 451670, 461280, 542004, 677505, 699360, 722672, 903340, 1084008, 1355010, 1445344, 1806680, 2168016, 2710020, 3613360, 4336032, 5420040, 7226720, 10840080, 21680160]

約数ペア:

[(1, 21680160), (2, 10840080), (3, 7226720), (4, 5420040), (5, 4336032), (6, 3613360), (8, 2710020), (10, 2168016), (12, 1806680), (15, 1445344), (16, 1355010), (20, 1084008), (24, 903340), (30, 722672), (31, 699360), (32, 677505), (40, 542004), (47, 461280), (48, 451670), (60, 361336), (62, 349680), (80, 271002), (93, 233120), (94, 230640), (96, 225835), (120, 180668), (124, 174840), (141, 153760), (155, 139872), (160, 135501), (186, 116560), (188, 115320), (235, 92256), (240, 90334), (248, 87420), (282, 76880), (310, 69936), (372, 58280), (376, 57660), (465, 46624), (470, 46128), (480, 45167), (496, 43710), (564, 38440), (620, 34968), (705, 30752), (744, 29140), (752, 28830), (930, 23312), (940, 23064), (961, 22560), (992, 21855), (1128, 19220), (1240, 17484), (1410, 15376), (1457, 14880), (1488, 14570), (1504, 14415), (1860, 11656), (1880, 11532), (1922, 11280), (2256, 9610), (2480, 8742), (2820, 7688), (2883, 7520), (2914, 7440), (2976, 7285), (3720, 5828), (3760, 5766), (3844, 5640), (4371, 4960), (4512, 4805)]