80311100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1059

約数の個数: 72

約数和(自身を含む): 187904640

約数和(自身を除く): 107593540

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 380, 430, 475, 817, 860, 950, 983, 1075, 1634, 1900, 1966, 2150, 3268, 3932, 4085, 4300, 4915, 8170, 9830, 16340, 18677, 19660, 20425, 24575, 37354, 40850, 42269, 49150, 74708, 81700, 84538, 93385, 98300, 169076, 186770, 211345, 373540, 422690, 466925, 803111, 845380, 933850, 1056725, 1606222, 1867700, 2113450, 3212444, 4015555, 4226900, 8031110, 16062220, 20077775, 40155550, 80311100]

約数ペア:

[(1, 80311100), (2, 40155550), (4, 20077775), (5, 16062220), (10, 8031110), (19, 4226900), (20, 4015555), (25, 3212444), (38, 2113450), (43, 1867700), (50, 1606222), (76, 1056725), (86, 933850), (95, 845380), (100, 803111), (172, 466925), (190, 422690), (215, 373540), (380, 211345), (430, 186770), (475, 169076), (817, 98300), (860, 93385), (950, 84538), (983, 81700), (1075, 74708), (1634, 49150), (1900, 42269), (1966, 40850), (2150, 37354), (3268, 24575), (3932, 20425), (4085, 19660), (4300, 18677), (4915, 16340), (8170, 9830)]