28745880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{569}}^1$

素因数の和:1004

約数の個数: 64

約数和(自身を含む): 86594400

約数和(自身を除く): 57848520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 421, 569, 842, 1138, 1263, 1684, 1707, 2105, 2276, 2526, 2845, 3368, 3414, 4210, 4552, 5052, 5690, 6315, 6828, 8420, 8535, 10104, 11380, 12630, 13656, 16840, 17070, 22760, 25260, 34140, 50520, 68280, 239549, 479098, 718647, 958196, 1197745, 1437294, 1916392, 2395490, 2874588, 3593235, 4790980, 5749176, 7186470, 9581960, 14372940, 28745880]

約数ペア:

[(1, 28745880), (2, 14372940), (3, 9581960), (4, 7186470), (5, 5749176), (6, 4790980), (8, 3593235), (10, 2874588), (12, 2395490), (15, 1916392), (20, 1437294), (24, 1197745), (30, 958196), (40, 718647), (60, 479098), (120, 239549), (421, 68280), (569, 50520), (842, 34140), (1138, 25260), (1263, 22760), (1684, 17070), (1707, 16840), (2105, 13656), (2276, 12630), (2526, 11380), (2845, 10104), (3368, 8535), (3414, 8420), (4210, 6828), (4552, 6315), (5052, 5690)]