21448816

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 42854400

約数和(自身を除く): 21405584

約数列:

[1, 2, 4, 8, 16, 71, 79, 142, 158, 239, 284, 316, 478, 568, 632, 956, 1136, 1264, 1912, 3824, 5609, 11218, 16969, 18881, 22436, 33938, 37762, 44872, 67876, 75524, 89744, 135752, 151048, 271504, 302096, 1340551, 2681102, 5362204, 10724408, 21448816]

約数ペア:

[(1, 21448816), (2, 10724408), (4, 5362204), (8, 2681102), (16, 1340551), (71, 302096), (79, 271504), (142, 151048), (158, 135752), (239, 89744), (284, 75524), (316, 67876), (478, 44872), (568, 37762), (632, 33938), (956, 22436), (1136, 18881), (1264, 16969), (1912, 11218), (3824, 5609)]