21576645

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6949}}^1$

素因数の和:6986

約数の個数: 32

約数和(自身を含む): 40032000

約数和(自身を除く): 18455355

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6949, 20847, 34745, 62541, 104235, 159827, 187623, 312705, 479481, 799135, 938115, 1438443, 2397405, 4315329, 7192215, 21576645]

約数ペア:

[(1, 21576645), (3, 7192215), (5, 4315329), (9, 2397405), (15, 1438443), (23, 938115), (27, 799135), (45, 479481), (69, 312705), (115, 187623), (135, 159827), (207, 104235), (345, 62541), (621, 34745), (1035, 20847), (3105, 6949)]