81374990

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{15619}}^1$

素因数の和:16147

約数の個数: 16

約数和(自身を含む): 146765520

約数和(自身を除く): 65390530

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 5210, 15619, 31238, 78095, 156190, 8137499, 16274998, 40687495, 81374990]

約数ペア:

[(1, 81374990), (2, 40687495), (5, 16274998), (10, 8137499), (521, 156190), (1042, 78095), (2605, 31238), (5210, 15619)]