20841580

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4673}}^1$

素因数の和:4905

約数の個数: 24

約数和(自身を含む): 43972992

約数和(自身を除く): 23131412

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4673, 9346, 18692, 23365, 46730, 93460, 1042079, 2084158, 4168316, 5210395, 10420790, 20841580]

約数ペア:

[(1, 20841580), (2, 10420790), (4, 5210395), (5, 4168316), (10, 2084158), (20, 1042079), (223, 93460), (446, 46730), (892, 23365), (1115, 18692), (2230, 9346), (4460, 4673)]