20813030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4073}}^1$

素因数の和:4160

約数の個数: 32

約数和(自身を含む): 43412544

約数和(自身を除く): 22599514

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4073, 5110, 8146, 20365, 28511, 40730, 57022, 142555, 285110, 297329, 594658, 1486645, 2081303, 2973290, 4162606, 10406515, 20813030]

約数ペア:

[(1, 20813030), (2, 10406515), (5, 4162606), (7, 2973290), (10, 2081303), (14, 1486645), (35, 594658), (70, 297329), (73, 285110), (146, 142555), (365, 57022), (511, 40730), (730, 28511), (1022, 20365), (2555, 8146), (4073, 5110)]