21826740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27983}}^1$

素因数の和:28008

約数の個数: 48

約数和(自身を含む): 65818368

約数和(自身を除く): 43991628

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27983, 55966, 83949, 111932, 139915, 167898, 279830, 335796, 363779, 419745, 559660, 727558, 839490, 1091337, 1455116, 1678980, 1818895, 2182674, 3637790, 4365348, 5456685, 7275580, 10913370, 21826740]

約数ペア:

[(1, 21826740), (2, 10913370), (3, 7275580), (4, 5456685), (5, 4365348), (6, 3637790), (10, 2182674), (12, 1818895), (13, 1678980), (15, 1455116), (20, 1091337), (26, 839490), (30, 727558), (39, 559660), (52, 419745), (60, 363779), (65, 335796), (78, 279830), (130, 167898), (156, 139915), (195, 111932), (260, 83949), (390, 55966), (780, 27983)]