21402030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54877}}^1$

素因数の和:54900

約数の個数: 32

約数和(自身を含む): 55317024

約数和(自身を除く): 33914994

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54877, 109754, 164631, 274385, 329262, 548770, 713401, 823155, 1426802, 1646310, 2140203, 3567005, 4280406, 7134010, 10701015, 21402030]

約数ペア:

[(1, 21402030), (2, 10701015), (3, 7134010), (5, 4280406), (6, 3567005), (10, 2140203), (13, 1646310), (15, 1426802), (26, 823155), (30, 713401), (39, 548770), (65, 329262), (78, 274385), (130, 164631), (195, 109754), (390, 54877)]