21870814

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 39237120

約数和(自身を除く): 17366306

約数列:

[1, 2, 7, 14, 29, 58, 103, 203, 206, 406, 523, 721, 1046, 1442, 2987, 3661, 5974, 7322, 15167, 20909, 30334, 41818, 53869, 106169, 107738, 212338, 377083, 754166, 1562201, 3124402, 10935407, 21870814]

約数ペア:

[(1, 21870814), (2, 10935407), (7, 3124402), (14, 1562201), (29, 754166), (58, 377083), (103, 212338), (203, 107738), (206, 106169), (406, 53869), (523, 41818), (721, 30334), (1046, 20909), (1442, 15167), (2987, 7322), (3661, 5974)]