31281471

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 51253664

約数和(自身を除く): 19972193

約数列:

[1, 3, 9, 13, 27, 39, 61, 81, 117, 183, 351, 487, 549, 793, 1053, 1461, 1647, 2379, 4383, 4941, 6331, 7137, 13149, 18993, 21411, 29707, 39447, 56979, 64233, 89121, 170937, 267363, 386191, 512811, 802089, 1158573, 2406267, 3475719, 10427157, 31281471]

約数ペア:

[(1, 31281471), (3, 10427157), (9, 3475719), (13, 2406267), (27, 1158573), (39, 802089), (61, 512811), (81, 386191), (117, 267363), (183, 170937), (351, 89121), (487, 64233), (549, 56979), (793, 39447), (1053, 29707), (1461, 21411), (1647, 18993), (2379, 13149), (4383, 7137), (4941, 6331)]