18413240

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1319}}^1$

素因数の和:1679

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 23166760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1319, 1396, 1745, 2638, 2792, 3490, 5276, 6595, 6980, 10552, 13190, 13960, 26380, 52760, 460331, 920662, 1841324, 2301655, 3682648, 4603310, 9206620, 18413240]

約数ペア:

[(1, 18413240), (2, 9206620), (4, 4603310), (5, 3682648), (8, 2301655), (10, 1841324), (20, 920662), (40, 460331), (349, 52760), (698, 26380), (1319, 13960), (1396, 13190), (1745, 10552), (2638, 6980), (2792, 6595), (3490, 5276)]