20420290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2543}}^1$

素因数の和:2634

約数の個数: 32

約数和(自身を含む): 40663296

約数和(自身を除く): 20243006

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 146, 365, 730, 803, 1606, 2543, 4015, 5086, 8030, 12715, 25430, 27973, 55946, 139865, 185639, 279730, 371278, 928195, 1856390, 2042029, 4084058, 10210145, 20420290]

約数ペア:

[(1, 20420290), (2, 10210145), (5, 4084058), (10, 2042029), (11, 1856390), (22, 928195), (55, 371278), (73, 279730), (110, 185639), (146, 139865), (365, 55946), (730, 27973), (803, 25430), (1606, 12715), (2543, 8030), (4015, 5086)]