20587515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1487}}^1$

素因数の和:1579

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 15410181

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1487, 2769, 4461, 4615, 7435, 13845, 19331, 22305, 57993, 96655, 105577, 289965, 316731, 527885, 1372501, 1583655, 4117503, 6862505, 20587515]

約数ペア:

[(1, 20587515), (3, 6862505), (5, 4117503), (13, 1583655), (15, 1372501), (39, 527885), (65, 316731), (71, 289965), (195, 105577), (213, 96655), (355, 57993), (923, 22305), (1065, 19331), (1487, 13845), (2769, 7435), (4461, 4615)]