20858370

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{677}}^1$

素因数の和:779

約数の個数: 64

約数和(自身を含む): 54673920

約数和(自身を除く): 33815550

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 79, 130, 158, 195, 237, 390, 395, 474, 677, 790, 1027, 1185, 1354, 2031, 2054, 2370, 3081, 3385, 4062, 5135, 6162, 6770, 8801, 10155, 10270, 15405, 17602, 20310, 26403, 30810, 44005, 52806, 53483, 88010, 106966, 132015, 160449, 264030, 267415, 320898, 534830, 695279, 802245, 1390558, 1604490, 2085837, 3476395, 4171674, 6952790, 10429185, 20858370]

約数ペア:

[(1, 20858370), (2, 10429185), (3, 6952790), (5, 4171674), (6, 3476395), (10, 2085837), (13, 1604490), (15, 1390558), (26, 802245), (30, 695279), (39, 534830), (65, 320898), (78, 267415), (79, 264030), (130, 160449), (158, 132015), (195, 106966), (237, 88010), (390, 53483), (395, 52806), (474, 44005), (677, 30810), (790, 26403), (1027, 20310), (1185, 17602), (1354, 15405), (2031, 10270), (2054, 10155), (2370, 8801), (3081, 6770), (3385, 6162), (4062, 5135)]