81611080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1471}}^1$

素因数の和:1574

約数の個数: 64

約数和(自身を含む): 196070400

約数和(自身を除く): 114459320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 73, 76, 95, 146, 152, 190, 292, 365, 380, 584, 730, 760, 1387, 1460, 1471, 2774, 2920, 2942, 5548, 5884, 6935, 7355, 11096, 11768, 13870, 14710, 27740, 27949, 29420, 55480, 55898, 58840, 107383, 111796, 139745, 214766, 223592, 279490, 429532, 536915, 558980, 859064, 1073830, 1117960, 2040277, 2147660, 4080554, 4295320, 8161108, 10201385, 16322216, 20402770, 40805540, 81611080]

約数ペア:

[(1, 81611080), (2, 40805540), (4, 20402770), (5, 16322216), (8, 10201385), (10, 8161108), (19, 4295320), (20, 4080554), (38, 2147660), (40, 2040277), (73, 1117960), (76, 1073830), (95, 859064), (146, 558980), (152, 536915), (190, 429532), (292, 279490), (365, 223592), (380, 214766), (584, 139745), (730, 111796), (760, 107383), (1387, 58840), (1460, 55898), (1471, 55480), (2774, 29420), (2920, 27949), (2942, 27740), (5548, 14710), (5884, 13870), (6935, 11768), (7355, 11096)]