20945890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4099}}^1$

素因数の和:4186

約数の個数: 32

約数和(自身を含む): 43689600

約数和(自身を除く): 22743710

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4099, 5110, 8198, 20495, 28693, 40990, 57386, 143465, 286930, 299227, 598454, 1496135, 2094589, 2992270, 4189178, 10472945, 20945890]

約数ペア:

[(1, 20945890), (2, 10472945), (5, 4189178), (7, 2992270), (10, 2094589), (14, 1496135), (35, 598454), (70, 299227), (73, 286930), (146, 143465), (365, 57386), (511, 40990), (730, 28693), (1022, 20495), (2555, 8198), (4099, 5110)]