20161505

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{607}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 30234624

約数和(自身を除く): 10073119

約数列:

[1, 5, 7, 13, 35, 65, 73, 91, 365, 455, 511, 607, 949, 2555, 3035, 4249, 4745, 6643, 7891, 21245, 33215, 39455, 44311, 55237, 221555, 276185, 310177, 576043, 1550885, 2880215, 4032301, 20161505]

約数ペア:

[(1, 20161505), (5, 4032301), (7, 2880215), (13, 1550885), (35, 576043), (65, 310177), (73, 276185), (91, 221555), (365, 55237), (455, 44311), (511, 39455), (607, 33215), (949, 21245), (2555, 7891), (3035, 6643), (4249, 4745)]