20955415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 7784681

約数列:

[1, 5, 13, 23, 65, 107, 115, 131, 299, 535, 655, 1391, 1495, 1703, 2461, 3013, 6955, 8515, 12305, 14017, 15065, 31993, 39169, 70085, 159965, 182221, 195845, 322391, 911105, 1611955, 4191083, 20955415]

約数ペア:

[(1, 20955415), (5, 4191083), (13, 1611955), (23, 911105), (65, 322391), (107, 195845), (115, 182221), (131, 159965), (299, 70085), (535, 39169), (655, 31993), (1391, 15065), (1495, 14017), (1703, 12305), (2461, 8515), (3013, 6955)]