21461004020

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2560979}}^1$

素因数の和:2561407

約数の個数: 24

約数和(自身を含む): 45175687200

約数和(自身を除く): 23714683180

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 4190, 8380, 2560979, 5121958, 10243916, 12804895, 25609790, 51219580, 1073050201, 2146100402, 4292200804, 5365251005, 10730502010, 21461004020]

約数ペア:

[(1, 21461004020), (2, 10730502010), (4, 5365251005), (5, 4292200804), (10, 2146100402), (20, 1073050201), (419, 51219580), (838, 25609790), (1676, 12804895), (2095, 10243916), (4190, 5121958), (8380, 2560979)]