1291567240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{787541}}^1$

素因数の和:787593

約数の個数: 32

約数和(自身を含む): 2976908760

約数和(自身を除く): 1685341520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 787541, 1575082, 3150164, 3937705, 6300328, 7875410, 15750820, 31501640, 32289181, 64578362, 129156724, 161445905, 258313448, 322891810, 645783620, 1291567240]

約数ペア:

[(1, 1291567240), (2, 645783620), (4, 322891810), (5, 258313448), (8, 161445905), (10, 129156724), (20, 64578362), (40, 32289181), (41, 31501640), (82, 15750820), (164, 7875410), (205, 6300328), (328, 3937705), (410, 3150164), (820, 1575082), (1640, 787541)]