20994715

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 30666240

約数和(自身を除く): 9671525

約数列:

[1, 5, 7, 19, 35, 95, 131, 133, 241, 655, 665, 917, 1205, 1687, 2489, 4579, 4585, 8435, 12445, 17423, 22895, 31571, 32053, 87115, 157855, 160265, 220997, 599849, 1104985, 2999245, 4198943, 20994715]

約数ペア:

[(1, 20994715), (5, 4198943), (7, 2999245), (19, 1104985), (35, 599849), (95, 220997), (131, 160265), (133, 157855), (241, 87115), (655, 32053), (665, 31571), (917, 22895), (1205, 17423), (1687, 12445), (2489, 8435), (4579, 4585)]