421460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1621}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 953736

約数和(自身を除く): 532276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1621, 3242, 6484, 8105, 16210, 21073, 32420, 42146, 84292, 105365, 210730, 421460]

約数ペア:

[(1, 421460), (2, 210730), (4, 105365), (5, 84292), (10, 42146), (13, 32420), (20, 21073), (26, 16210), (52, 8105), (65, 6484), (130, 3242), (260, 1621)]