87281680

素因数分解:

$2^4\times 5^1\times {\mathrm{1091021}}^1$

素因数の和:1091034

約数の個数: 20

約数和(自身を含む): 202930092

約数和(自身を除く): 115648412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1091021, 2182042, 4364084, 5455105, 8728168, 10910210, 17456336, 21820420, 43640840, 87281680]

約数ペア:

[(1, 87281680), (2, 43640840), (4, 21820420), (5, 17456336), (8, 10910210), (10, 8728168), (16, 5455105), (20, 4364084), (40, 2182042), (80, 1091021)]