30728680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{457}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 71022060

約数和(自身を除く): 40293380

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 457, 820, 914, 1640, 1681, 1828, 2285, 3362, 3656, 4570, 6724, 8405, 9140, 13448, 16810, 18280, 18737, 33620, 37474, 67240, 74948, 93685, 149896, 187370, 374740, 749480, 768217, 1536434, 3072868, 3841085, 6145736, 7682170, 15364340, 30728680]

約数ペア:

[(1, 30728680), (2, 15364340), (4, 7682170), (5, 6145736), (8, 3841085), (10, 3072868), (20, 1536434), (40, 768217), (41, 749480), (82, 374740), (164, 187370), (205, 149896), (328, 93685), (410, 74948), (457, 67240), (820, 37474), (914, 33620), (1640, 18737), (1681, 18280), (1828, 16810), (2285, 13448), (3362, 9140), (3656, 8405), (4570, 6724)]