28490020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8429}}^1$

素因数の和:8464

約数の個数: 36

約数和(自身を含む): 64792980

約数和(自身を除く): 36302960

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 8429, 16858, 33716, 42145, 84290, 109577, 168580, 219154, 438308, 547885, 1095770, 1424501, 2191540, 2849002, 5698004, 7122505, 14245010, 28490020]

約数ペア:

[(1, 28490020), (2, 14245010), (4, 7122505), (5, 5698004), (10, 2849002), (13, 2191540), (20, 1424501), (26, 1095770), (52, 547885), (65, 438308), (130, 219154), (169, 168580), (260, 109577), (338, 84290), (676, 42145), (845, 33716), (1690, 16858), (3380, 8429)]