20213870

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1700

約数の個数: 32

約数和(自身を含む): 38538720

約数和(自身を除く): 18324850

約数列:

[1, 2, 5, 10, 29, 43, 58, 86, 145, 215, 290, 430, 1247, 1621, 2494, 3242, 6235, 8105, 12470, 16210, 47009, 69703, 94018, 139406, 235045, 348515, 470090, 697030, 2021387, 4042774, 10106935, 20213870]

約数ペア:

[(1, 20213870), (2, 10106935), (5, 4042774), (10, 2021387), (29, 697030), (43, 470090), (58, 348515), (86, 235045), (145, 139406), (215, 94018), (290, 69703), (430, 47009), (1247, 16210), (1621, 12470), (2494, 8105), (3242, 6235)]