19997848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{11311}}^1$

素因数の和:11347

約数の個数: 32

約数和(自身を含む): 42759360

約数和(自身を除く): 22761512

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 11311, 22622, 45244, 90488, 147043, 192287, 294086, 384574, 588172, 769148, 1176344, 1538296, 2499731, 4999462, 9998924, 19997848]

約数ペア:

[(1, 19997848), (2, 9998924), (4, 4999462), (8, 2499731), (13, 1538296), (17, 1176344), (26, 769148), (34, 588172), (52, 384574), (68, 294086), (104, 192287), (136, 147043), (221, 90488), (442, 45244), (884, 22622), (1768, 11311)]