28175680

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{521}}^1$

素因数の和:564

約数の個数: 84

約数和(自身を含む): 72790812

約数和(自身を除く): 44615132

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 169, 208, 260, 320, 338, 416, 520, 521, 676, 832, 845, 1040, 1042, 1352, 1690, 2080, 2084, 2605, 2704, 3380, 4160, 4168, 5210, 5408, 6760, 6773, 8336, 10420, 10816, 13520, 13546, 16672, 20840, 27040, 27092, 33344, 33865, 41680, 54080, 54184, 67730, 83360, 88049, 108368, 135460, 166720, 176098, 216736, 270920, 352196, 433472, 440245, 541840, 704392, 880490, 1083680, 1408784, 1760980, 2167360, 2817568, 3521960, 5635136, 7043920, 14087840, 28175680]

約数ペア:

[(1, 28175680), (2, 14087840), (4, 7043920), (5, 5635136), (8, 3521960), (10, 2817568), (13, 2167360), (16, 1760980), (20, 1408784), (26, 1083680), (32, 880490), (40, 704392), (52, 541840), (64, 440245), (65, 433472), (80, 352196), (104, 270920), (130, 216736), (160, 176098), (169, 166720), (208, 135460), (260, 108368), (320, 88049), (338, 83360), (416, 67730), (520, 54184), (521, 54080), (676, 41680), (832, 33865), (845, 33344), (1040, 27092), (1042, 27040), (1352, 20840), (1690, 16672), (2080, 13546), (2084, 13520), (2605, 10816), (2704, 10420), (3380, 8336), (4160, 6773), (4168, 6760), (5210, 5408)]