21086008

素因数分解:

$2^3\times {\mathrm{251}}^1\times {\mathrm{10501}}^1$

素因数の和:10758

約数の個数: 16

約数和(自身を含む): 39697560

約数和(自身を除く): 18611552

約数列:

[1, 2, 4, 8, 251, 502, 1004, 2008, 10501, 21002, 42004, 84008, 2635751, 5271502, 10543004, 21086008]

約数ペア:

[(1, 21086008), (2, 10543004), (4, 5271502), (8, 2635751), (251, 84008), (502, 42004), (1004, 21002), (2008, 10501)]