20214730

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{887}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 37977984

約数和(自身を除く): 17763254

約数列:

[1, 2, 5, 10, 43, 53, 86, 106, 215, 265, 430, 530, 887, 1774, 2279, 4435, 4558, 8870, 11395, 22790, 38141, 47011, 76282, 94022, 190705, 235055, 381410, 470110, 2021473, 4042946, 10107365, 20214730]

約数ペア:

[(1, 20214730), (2, 10107365), (5, 4042946), (10, 2021473), (43, 470110), (53, 381410), (86, 235055), (106, 190705), (215, 94022), (265, 76282), (430, 47011), (530, 38141), (887, 22790), (1774, 11395), (2279, 8870), (4435, 4558)]