21294440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28019}}^1$

素因数の和:28049

約数の個数: 32

約数和(自身を含む): 50436000

約数和(自身を除く): 29141560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28019, 56038, 112076, 140095, 224152, 280190, 532361, 560380, 1064722, 1120760, 2129444, 2661805, 4258888, 5323610, 10647220, 21294440]

約数ペア:

[(1, 21294440), (2, 10647220), (4, 5323610), (5, 4258888), (8, 2661805), (10, 2129444), (19, 1120760), (20, 1064722), (38, 560380), (40, 532361), (76, 280190), (95, 224152), (152, 140095), (190, 112076), (380, 56038), (760, 28019)]