18212960

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1279}}^1$

素因数の和:1383

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 25332640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1279, 1424, 1780, 2558, 2848, 3560, 5116, 6395, 7120, 10232, 12790, 14240, 20464, 25580, 40928, 51160, 102320, 113831, 204640, 227662, 455324, 569155, 910648, 1138310, 1821296, 2276620, 3642592, 4553240, 9106480, 18212960]

約数ペア:

[(1, 18212960), (2, 9106480), (4, 4553240), (5, 3642592), (8, 2276620), (10, 1821296), (16, 1138310), (20, 910648), (32, 569155), (40, 455324), (80, 227662), (89, 204640), (160, 113831), (178, 102320), (356, 51160), (445, 40928), (712, 25580), (890, 20464), (1279, 14240), (1424, 12790), (1780, 10232), (2558, 7120), (2848, 6395), (3560, 5116)]