21988616

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12437}}^1$

素因数の和:12473

約数の個数: 32

約数和(自身を含む): 47015640

約数和(自身を除く): 25027024

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 12437, 24874, 49748, 99496, 161681, 211429, 323362, 422858, 646724, 845716, 1293448, 1691432, 2748577, 5497154, 10994308, 21988616]

約数ペア:

[(1, 21988616), (2, 10994308), (4, 5497154), (8, 2748577), (13, 1691432), (17, 1293448), (26, 845716), (34, 646724), (52, 422858), (68, 323362), (104, 211429), (136, 161681), (221, 99496), (442, 49748), (884, 24874), (1768, 12437)]