18417400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1297}}^1$

素因数の和:1384

約数の個数: 48

約数和(自身を含む): 43457040

約数和(自身を除く): 25039640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1297, 1420, 1775, 2594, 2840, 3550, 5188, 6485, 7100, 10376, 12970, 14200, 25940, 32425, 51880, 64850, 92087, 129700, 184174, 259400, 368348, 460435, 736696, 920870, 1841740, 2302175, 3683480, 4604350, 9208700, 18417400]

約数ペア:

[(1, 18417400), (2, 9208700), (4, 4604350), (5, 3683480), (8, 2302175), (10, 1841740), (20, 920870), (25, 736696), (40, 460435), (50, 368348), (71, 259400), (100, 184174), (142, 129700), (200, 92087), (284, 64850), (355, 51880), (568, 32425), (710, 25940), (1297, 14200), (1420, 12970), (1775, 10376), (2594, 7100), (2840, 6485), (3550, 5188)]