31308921

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{8147}}^1$

素因数の和:8221

約数の個数: 24

約数和(自身を含む): 52538304

約数和(自身を除く): 21229383

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 8147, 24441, 57029, 73323, 171087, 496967, 513261, 1490901, 3478769, 4472703, 10436307, 31308921]

約数ペア:

[(1, 31308921), (3, 10436307), (7, 4472703), (9, 3478769), (21, 1490901), (61, 513261), (63, 496967), (183, 171087), (427, 73323), (549, 57029), (1281, 24441), (3843, 8147)]