40257940

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{12821}}^1$

素因数の和:12987

約数の個数: 24

約数和(自身を含む): 85086792

約数和(自身を除く): 44828852

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 12821, 25642, 51284, 64105, 128210, 256420, 2012897, 4025794, 8051588, 10064485, 20128970, 40257940]

約数ペア:

[(1, 40257940), (2, 20128970), (4, 10064485), (5, 8051588), (10, 4025794), (20, 2012897), (157, 256420), (314, 128210), (628, 64105), (785, 51284), (1570, 25642), (3140, 12821)]