21044440

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7207}}^1$

素因数の和:7291

約数の個数: 32

約数和(自身を含む): 48005280

約数和(自身を除く): 26960840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7207, 14414, 28828, 36035, 57656, 72070, 144140, 288280, 526111, 1052222, 2104444, 2630555, 4208888, 5261110, 10522220, 21044440]

約数ペア:

[(1, 21044440), (2, 10522220), (4, 5261110), (5, 4208888), (8, 2630555), (10, 2104444), (20, 1052222), (40, 526111), (73, 288280), (146, 144140), (292, 72070), (365, 57656), (584, 36035), (730, 28828), (1460, 14414), (2920, 7207)]