31217360

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6397}}^1$

素因数の和:6471

約数の個数: 40

約数和(自身を含む): 73781736

約数和(自身を除く): 42564376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 6397, 12794, 25588, 31985, 51176, 63970, 102352, 127940, 255880, 390217, 511760, 780434, 1560868, 1951085, 3121736, 3902170, 6243472, 7804340, 15608680, 31217360]

約数ペア:

[(1, 31217360), (2, 15608680), (4, 7804340), (5, 6243472), (8, 3902170), (10, 3121736), (16, 1951085), (20, 1560868), (40, 780434), (61, 511760), (80, 390217), (122, 255880), (244, 127940), (305, 102352), (488, 63970), (610, 51176), (976, 31985), (1220, 25588), (2440, 12794), (4880, 6397)]