1005020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1621}}^1$

素因数の和:1661

約数の個数: 24

約数和(自身を含む): 2179968

約数和(自身を除く): 1174948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1621, 3242, 6484, 8105, 16210, 32420, 50251, 100502, 201004, 251255, 502510, 1005020]

約数ペア:

[(1, 1005020), (2, 502510), (4, 251255), (5, 201004), (10, 100502), (20, 50251), (31, 32420), (62, 16210), (124, 8105), (155, 6484), (310, 3242), (620, 1621)]