20705180

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12473}}^1$

素因数の和:12565

約数の個数: 24

約数和(自身を含む): 44008272

約数和(自身を除く): 23303092

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12473, 24946, 49892, 62365, 124730, 249460, 1035259, 2070518, 4141036, 5176295, 10352590, 20705180]

約数ペア:

[(1, 20705180), (2, 10352590), (4, 5176295), (5, 4141036), (10, 2070518), (20, 1035259), (83, 249460), (166, 124730), (332, 62365), (415, 49892), (830, 24946), (1660, 12473)]