20946720

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{151}}^1$

素因数の和:203

約数の個数: 144

約数和(自身を含む): 70555968

約数和(自身を除く): 49609248

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 151, 160, 170, 204, 240, 255, 272, 289, 302, 340, 408, 453, 480, 510, 544, 578, 604, 680, 755, 816, 867, 906, 1020, 1156, 1208, 1360, 1445, 1510, 1632, 1734, 1812, 2040, 2265, 2312, 2416, 2567, 2720, 2890, 3020, 3468, 3624, 4080, 4335, 4530, 4624, 4832, 5134, 5780, 6040, 6936, 7248, 7701, 8160, 8670, 9060, 9248, 10268, 11560, 12080, 12835, 13872, 14496, 15402, 17340, 18120, 20536, 23120, 24160, 25670, 27744, 30804, 34680, 36240, 38505, 41072, 43639, 46240, 51340, 61608, 69360, 72480, 77010, 82144, 87278, 102680, 123216, 130917, 138720, 154020, 174556, 205360, 218195, 246432, 261834, 308040, 349112, 410720, 436390, 523668, 616080, 654585, 698224, 872780, 1047336, 1232160, 1309170, 1396448, 1745560, 2094672, 2618340, 3491120, 4189344, 5236680, 6982240, 10473360, 20946720]

約数ペア:

[(1, 20946720), (2, 10473360), (3, 6982240), (4, 5236680), (5, 4189344), (6, 3491120), (8, 2618340), (10, 2094672), (12, 1745560), (15, 1396448), (16, 1309170), (17, 1232160), (20, 1047336), (24, 872780), (30, 698224), (32, 654585), (34, 616080), (40, 523668), (48, 436390), (51, 410720), (60, 349112), (68, 308040), (80, 261834), (85, 246432), (96, 218195), (102, 205360), (120, 174556), (136, 154020), (151, 138720), (160, 130917), (170, 123216), (204, 102680), (240, 87278), (255, 82144), (272, 77010), (289, 72480), (302, 69360), (340, 61608), (408, 51340), (453, 46240), (480, 43639), (510, 41072), (544, 38505), (578, 36240), (604, 34680), (680, 30804), (755, 27744), (816, 25670), (867, 24160), (906, 23120), (1020, 20536), (1156, 18120), (1208, 17340), (1360, 15402), (1445, 14496), (1510, 13872), (1632, 12835), (1734, 12080), (1812, 11560), (2040, 10268), (2265, 9248), (2312, 9060), (2416, 8670), (2567, 8160), (2720, 7701), (2890, 7248), (3020, 6936), (3468, 6040), (3624, 5780), (4080, 5134), (4335, 4832), (4530, 4624)]