28274480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{877}}^1$

素因数の和:934

約数の個数: 80

約数和(自身を含む): 73161984

約数和(自身を除く): 44887504

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 877, 1040, 1240, 1612, 1754, 2015, 2480, 3224, 3508, 4030, 4385, 6448, 7016, 8060, 8770, 11401, 14032, 16120, 17540, 22802, 27187, 32240, 35080, 45604, 54374, 57005, 70160, 91208, 108748, 114010, 135935, 182416, 217496, 228020, 271870, 353431, 434992, 456040, 543740, 706862, 912080, 1087480, 1413724, 1767155, 2174960, 2827448, 3534310, 5654896, 7068620, 14137240, 28274480]

約数ペア:

[(1, 28274480), (2, 14137240), (4, 7068620), (5, 5654896), (8, 3534310), (10, 2827448), (13, 2174960), (16, 1767155), (20, 1413724), (26, 1087480), (31, 912080), (40, 706862), (52, 543740), (62, 456040), (65, 434992), (80, 353431), (104, 271870), (124, 228020), (130, 217496), (155, 182416), (208, 135935), (248, 114010), (260, 108748), (310, 91208), (403, 70160), (496, 57005), (520, 54374), (620, 45604), (806, 35080), (877, 32240), (1040, 27187), (1240, 22802), (1612, 17540), (1754, 16120), (2015, 14032), (2480, 11401), (3224, 8770), (3508, 8060), (4030, 7016), (4385, 6448)]