161938280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2741}}^1$

素因数の和:2970

約数の個数: 64

約数和(自身を含む): 418538880

約数和(自身を除く): 256600600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 844, 1055, 1477, 1688, 2110, 2741, 2954, 4220, 5482, 5908, 7385, 8440, 10964, 11816, 13705, 14770, 19187, 21928, 27410, 29540, 38374, 54820, 59080, 76748, 95935, 109640, 153496, 191870, 383740, 578351, 767480, 1156702, 2313404, 2891755, 4048457, 4626808, 5783510, 8096914, 11567020, 16193828, 20242285, 23134040, 32387656, 40484570, 80969140, 161938280]

約数ペア:

[(1, 161938280), (2, 80969140), (4, 40484570), (5, 32387656), (7, 23134040), (8, 20242285), (10, 16193828), (14, 11567020), (20, 8096914), (28, 5783510), (35, 4626808), (40, 4048457), (56, 2891755), (70, 2313404), (140, 1156702), (211, 767480), (280, 578351), (422, 383740), (844, 191870), (1055, 153496), (1477, 109640), (1688, 95935), (2110, 76748), (2741, 59080), (2954, 54820), (4220, 38374), (5482, 29540), (5908, 27410), (7385, 21928), (8440, 19187), (10964, 14770), (11816, 13705)]