86678980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{39761}}^1$

素因数の和:39879

約数の個数: 24

約数和(自身を含む): 183700440

約数和(自身を除く): 97021460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 39761, 79522, 159044, 198805, 397610, 795220, 4333949, 8667898, 17335796, 21669745, 43339490, 86678980]

約数ペア:

[(1, 86678980), (2, 43339490), (4, 21669745), (5, 17335796), (10, 8667898), (20, 4333949), (109, 795220), (218, 397610), (436, 198805), (545, 159044), (1090, 79522), (2180, 39761)]