289329680

素因数分解:

$2^4\times 5^1\times {\mathrm{3616621}}^1$

素因数の和:3616634

約数の個数: 20

約数和(自身を含む): 672691692

約数和(自身を除く): 383362012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3616621, 7233242, 14466484, 18083105, 28932968, 36166210, 57865936, 72332420, 144664840, 289329680]

約数ペア:

[(1, 289329680), (2, 144664840), (4, 72332420), (5, 57865936), (8, 36166210), (10, 28932968), (16, 18083105), (20, 14466484), (40, 7233242), (80, 3616621)]