20640858

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{70207}}^1$

素因数の和:70226

約数の個数: 24

約数和(自身を含む): 48022272

約数和(自身を除く): 27381414

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 70207, 140414, 210621, 421242, 491449, 982898, 1474347, 2948694, 3440143, 6880286, 10320429, 20640858]

約数ペア:

[(1, 20640858), (2, 10320429), (3, 6880286), (6, 3440143), (7, 2948694), (14, 1474347), (21, 982898), (42, 491449), (49, 421242), (98, 210621), (147, 140414), (294, 70207)]