18456640

素因数分解:

$2^6\times 5^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:575

約数の個数: 56

約数和(自身を含む): 44375832

約数和(自身を除く): 25919192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 137, 160, 274, 320, 421, 548, 685, 842, 1096, 1370, 1684, 2105, 2192, 2740, 3368, 4210, 4384, 5480, 6736, 8420, 8768, 10960, 13472, 16840, 21920, 26944, 33680, 43840, 57677, 67360, 115354, 134720, 230708, 288385, 461416, 576770, 922832, 1153540, 1845664, 2307080, 3691328, 4614160, 9228320, 18456640]

約数ペア:

[(1, 18456640), (2, 9228320), (4, 4614160), (5, 3691328), (8, 2307080), (10, 1845664), (16, 1153540), (20, 922832), (32, 576770), (40, 461416), (64, 288385), (80, 230708), (137, 134720), (160, 115354), (274, 67360), (320, 57677), (421, 43840), (548, 33680), (685, 26944), (842, 21920), (1096, 16840), (1370, 13472), (1684, 10960), (2105, 8768), (2192, 8420), (2740, 6736), (3368, 5480), (4210, 4384)]