20702576

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{557}}^1$

素因数の和:689

約数の個数: 40

約数和(自身を含む): 42345504

約数和(自身を除く): 21642928

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 101, 184, 202, 368, 404, 557, 808, 1114, 1616, 2228, 2323, 4456, 4646, 8912, 9292, 12811, 18584, 25622, 37168, 51244, 56257, 102488, 112514, 204976, 225028, 450056, 900112, 1293911, 2587822, 5175644, 10351288, 20702576]

約数ペア:

[(1, 20702576), (2, 10351288), (4, 5175644), (8, 2587822), (16, 1293911), (23, 900112), (46, 450056), (92, 225028), (101, 204976), (184, 112514), (202, 102488), (368, 56257), (404, 51244), (557, 37168), (808, 25622), (1114, 18584), (1616, 12811), (2228, 9292), (2323, 8912), (4456, 4646)]