20493720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:210

約数の個数: 192

約数和(自身を含む): 74692800

約数和(自身を除く): 54199080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 29, 30, 36, 39, 40, 45, 52, 58, 60, 65, 72, 78, 87, 90, 104, 116, 117, 120, 130, 145, 151, 156, 174, 180, 195, 232, 234, 260, 261, 290, 302, 312, 348, 360, 377, 390, 435, 453, 468, 520, 522, 580, 585, 604, 696, 754, 755, 780, 870, 906, 936, 1044, 1131, 1160, 1170, 1208, 1305, 1359, 1508, 1510, 1560, 1740, 1812, 1885, 1963, 2088, 2262, 2265, 2340, 2610, 2718, 3016, 3020, 3393, 3480, 3624, 3770, 3926, 4379, 4524, 4530, 4680, 5220, 5436, 5655, 5889, 6040, 6786, 6795, 7540, 7852, 8758, 9048, 9060, 9815, 10440, 10872, 11310, 11778, 13137, 13572, 13590, 15080, 15704, 16965, 17516, 17667, 18120, 19630, 21895, 22620, 23556, 26274, 27144, 27180, 29445, 33930, 35032, 35334, 39260, 39411, 43790, 45240, 47112, 52548, 54360, 56927, 58890, 65685, 67860, 70668, 78520, 78822, 87580, 88335, 105096, 113854, 117780, 131370, 135720, 141336, 157644, 170781, 175160, 176670, 197055, 227708, 235560, 262740, 284635, 315288, 341562, 353340, 394110, 455416, 512343, 525480, 569270, 683124, 706680, 788220, 853905, 1024686, 1138540, 1366248, 1576440, 1707810, 2049372, 2277080, 2561715, 3415620, 4098744, 5123430, 6831240, 10246860, 20493720]

約数ペア:

[(1, 20493720), (2, 10246860), (3, 6831240), (4, 5123430), (5, 4098744), (6, 3415620), (8, 2561715), (9, 2277080), (10, 2049372), (12, 1707810), (13, 1576440), (15, 1366248), (18, 1138540), (20, 1024686), (24, 853905), (26, 788220), (29, 706680), (30, 683124), (36, 569270), (39, 525480), (40, 512343), (45, 455416), (52, 394110), (58, 353340), (60, 341562), (65, 315288), (72, 284635), (78, 262740), (87, 235560), (90, 227708), (104, 197055), (116, 176670), (117, 175160), (120, 170781), (130, 157644), (145, 141336), (151, 135720), (156, 131370), (174, 117780), (180, 113854), (195, 105096), (232, 88335), (234, 87580), (260, 78822), (261, 78520), (290, 70668), (302, 67860), (312, 65685), (348, 58890), (360, 56927), (377, 54360), (390, 52548), (435, 47112), (453, 45240), (468, 43790), (520, 39411), (522, 39260), (580, 35334), (585, 35032), (604, 33930), (696, 29445), (754, 27180), (755, 27144), (780, 26274), (870, 23556), (906, 22620), (936, 21895), (1044, 19630), (1131, 18120), (1160, 17667), (1170, 17516), (1208, 16965), (1305, 15704), (1359, 15080), (1508, 13590), (1510, 13572), (1560, 13137), (1740, 11778), (1812, 11310), (1885, 10872), (1963, 10440), (2088, 9815), (2262, 9060), (2265, 9048), (2340, 8758), (2610, 7852), (2718, 7540), (3016, 6795), (3020, 6786), (3393, 6040), (3480, 5889), (3624, 5655), (3770, 5436), (3926, 5220), (4379, 4680), (4524, 4530)]