30928760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{18859}}^1$

素因数の和:18911

約数の個数: 32

約数和(自身を含む): 71290800

約数和(自身を除く): 40362040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 18859, 37718, 75436, 94295, 150872, 188590, 377180, 754360, 773219, 1546438, 3092876, 3866095, 6185752, 7732190, 15464380, 30928760]

約数ペア:

[(1, 30928760), (2, 15464380), (4, 7732190), (5, 6185752), (8, 3866095), (10, 3092876), (20, 1546438), (40, 773219), (41, 754360), (82, 377180), (164, 188590), (205, 150872), (328, 94295), (410, 75436), (820, 37718), (1640, 18859)]