21367480

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10079}}^1$

素因数の和:10143

約数の個数: 32

約数和(自身を含む): 48988800

約数和(自身を除く): 27621320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10079, 20158, 40316, 50395, 80632, 100790, 201580, 403160, 534187, 1068374, 2136748, 2670935, 4273496, 5341870, 10683740, 21367480]

約数ペア:

[(1, 21367480), (2, 10683740), (4, 5341870), (5, 4273496), (8, 2670935), (10, 2136748), (20, 1068374), (40, 534187), (53, 403160), (106, 201580), (212, 100790), (265, 80632), (424, 50395), (530, 40316), (1060, 20158), (2120, 10079)]