21031607980

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3742279}}^1$

素因数の和:3742569

約数の個数: 24

約数和(自身を含む): 44323564320

約数和(自身を除く): 23291956340

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5620, 3742279, 7484558, 14969116, 18711395, 37422790, 74845580, 1051580399, 2103160798, 4206321596, 5257901995, 10515803990, 21031607980]

約数ペア:

[(1, 21031607980), (2, 10515803990), (4, 5257901995), (5, 4206321596), (10, 2103160798), (20, 1051580399), (281, 74845580), (562, 37422790), (1124, 18711395), (1405, 14969116), (2810, 7484558), (5620, 3742279)]