401024840

素因数分解:

$2^3\times 5^1\times {\mathrm{10025621}}^1$

素因数の和:10025632

約数の個数: 16

約数和(自身を含む): 902305980

約数和(自身を除く): 501281140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10025621, 20051242, 40102484, 50128105, 80204968, 100256210, 200512420, 401024840]

約数ペア:

[(1, 401024840), (2, 200512420), (4, 100256210), (5, 80204968), (8, 50128105), (10, 40102484), (20, 20051242), (40, 10025621)]