18688160

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{431}}^1$

素因数の和:717

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 25728352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 431, 542, 862, 1084, 1355, 1724, 2155, 2168, 2710, 3448, 4310, 4336, 5420, 6896, 8620, 8672, 10840, 13792, 17240, 21680, 34480, 43360, 68960, 116801, 233602, 467204, 584005, 934408, 1168010, 1868816, 2336020, 3737632, 4672040, 9344080, 18688160]

約数ペア:

[(1, 18688160), (2, 9344080), (4, 4672040), (5, 3737632), (8, 2336020), (10, 1868816), (16, 1168010), (20, 934408), (32, 584005), (40, 467204), (80, 233602), (160, 116801), (271, 68960), (431, 43360), (542, 34480), (862, 21680), (1084, 17240), (1355, 13792), (1724, 10840), (2155, 8672), (2168, 8620), (2710, 6896), (3448, 5420), (4310, 4336)]