25978160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24979}}^1$

素因数の和:25005

約数の個数: 40

約数和(自身を含む): 65047920

約数和(自身を除く): 39069760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 24979, 49958, 99916, 124895, 199832, 249790, 324727, 399664, 499580, 649454, 999160, 1298908, 1623635, 1998320, 2597816, 3247270, 5195632, 6494540, 12989080, 25978160]

約数ペア:

[(1, 25978160), (2, 12989080), (4, 6494540), (5, 5195632), (8, 3247270), (10, 2597816), (13, 1998320), (16, 1623635), (20, 1298908), (26, 999160), (40, 649454), (52, 499580), (65, 399664), (80, 324727), (104, 249790), (130, 199832), (208, 124895), (260, 99916), (520, 49958), (1040, 24979)]