1640804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 3175200

約数和(自身を除く): 1534396

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 419, 838, 979, 1676, 1958, 3916, 4609, 9218, 18436, 37291, 74582, 149164, 410201, 820402, 1640804]

約数ペア:

[(1, 1640804), (2, 820402), (4, 410201), (11, 149164), (22, 74582), (44, 37291), (89, 18436), (178, 9218), (356, 4609), (419, 3916), (838, 1958), (979, 1676)]