31881339

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{3863}}^1$

素因数の和:4007

約数の個数: 24

約数和(自身を含む): 53044992

約数和(自身を除く): 21163653

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2751, 3863, 8253, 11589, 27041, 34767, 81123, 243369, 506053, 1518159, 3542371, 4554477, 10627113, 31881339]

約数ペア:

[(1, 31881339), (3, 10627113), (7, 4554477), (9, 3542371), (21, 1518159), (63, 506053), (131, 243369), (393, 81123), (917, 34767), (1179, 27041), (2751, 11589), (3863, 8253)]