21800050

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5519}}^1$

素因数の和:5610

約数の個数: 24

約数和(自身を含む): 41068800

約数和(自身を除く): 19268750

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5519, 11038, 27595, 55190, 137975, 275950, 436001, 872002, 2180005, 4360010, 10900025, 21800050]

約数ペア:

[(1, 21800050), (2, 10900025), (5, 4360010), (10, 2180005), (25, 872002), (50, 436001), (79, 275950), (158, 137975), (395, 55190), (790, 27595), (1975, 11038), (3950, 5519)]