20657624

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1429}}^1$

素因数の和:1587

約数の個数: 32

約数和(自身を含む): 42042000

約数和(自身を除く): 21384376

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1429, 1807, 2858, 3614, 5716, 7228, 11432, 14456, 18577, 37154, 74308, 148616, 198631, 397262, 794524, 1589048, 2582203, 5164406, 10328812, 20657624]

約数ペア:

[(1, 20657624), (2, 10328812), (4, 5164406), (8, 2582203), (13, 1589048), (26, 794524), (52, 397262), (104, 198631), (139, 148616), (278, 74308), (556, 37154), (1112, 18577), (1429, 14456), (1807, 11432), (2858, 7228), (3614, 5716)]