31290987

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1879}}^1$

素因数の和:1963

約数の個数: 32

約数和(自身を含む): 52218880

約数和(自身を除く): 20927893

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1879, 2379, 5551, 5637, 13153, 16653, 24427, 39459, 73281, 114619, 170989, 343857, 512967, 802333, 1490047, 2406999, 4470141, 10430329, 31290987]

約数ペア:

[(1, 31290987), (3, 10430329), (7, 4470141), (13, 2406999), (21, 1490047), (39, 802333), (61, 512967), (91, 343857), (183, 170989), (273, 114619), (427, 73281), (793, 39459), (1281, 24427), (1879, 16653), (2379, 13153), (5551, 5637)]