20730020

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2111}}^1$

素因数の和:2611

約数の個数: 24

約数和(自身を含む): 43642368

約数和(自身を除く): 22912348

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2111, 2455, 4222, 4910, 8444, 9820, 10555, 21110, 42220, 1036501, 2073002, 4146004, 5182505, 10365010, 20730020]

約数ペア:

[(1, 20730020), (2, 10365010), (4, 5182505), (5, 4146004), (10, 2073002), (20, 1036501), (491, 42220), (982, 21110), (1964, 10555), (2111, 9820), (2455, 8444), (4222, 4910)]