20556531

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{167}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 11054349

約数列:

[1, 3, 9, 27, 47, 97, 141, 167, 291, 423, 501, 873, 1269, 1503, 2619, 4509, 4559, 7849, 13677, 16199, 23547, 41031, 48597, 70641, 123093, 145791, 211923, 437373, 761353, 2284059, 6852177, 20556531]

約数ペア:

[(1, 20556531), (3, 6852177), (9, 2284059), (27, 761353), (47, 437373), (97, 211923), (141, 145791), (167, 123093), (291, 70641), (423, 48597), (501, 41031), (873, 23547), (1269, 16199), (1503, 13677), (2619, 7849), (4509, 4559)]