218921380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{353099}}^1$

素因数の和:353139

約数の個数: 24

約数和(自身を含む): 474566400

約数和(自身を除く): 255645020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 353099, 706198, 1412396, 1765495, 3530990, 7061980, 10946069, 21892138, 43784276, 54730345, 109460690, 218921380]

約数ペア:

[(1, 218921380), (2, 109460690), (4, 54730345), (5, 43784276), (10, 21892138), (20, 10946069), (31, 7061980), (62, 3530990), (124, 1765495), (155, 1412396), (310, 706198), (620, 353099)]