20871010

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1026

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 18527390

約数列:

[1, 2, 5, 10, 29, 58, 79, 145, 158, 290, 395, 790, 911, 1822, 2291, 4555, 4582, 9110, 11455, 22910, 26419, 52838, 71969, 132095, 143938, 264190, 359845, 719690, 2087101, 4174202, 10435505, 20871010]

約数ペア:

[(1, 20871010), (2, 10435505), (5, 4174202), (10, 2087101), (29, 719690), (58, 359845), (79, 264190), (145, 143938), (158, 132095), (290, 71969), (395, 52838), (790, 26419), (911, 22910), (1822, 11455), (2291, 9110), (4555, 4582)]