20961940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55163}}^1$

素因数の和:55191

約数の個数: 24

約数和(自身を含む): 46337760

約数和(自身を除く): 25375820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55163, 110326, 220652, 275815, 551630, 1048097, 1103260, 2096194, 4192388, 5240485, 10480970, 20961940]

約数ペア:

[(1, 20961940), (2, 10480970), (4, 5240485), (5, 4192388), (10, 2096194), (19, 1103260), (20, 1048097), (38, 551630), (76, 275815), (95, 220652), (190, 110326), (380, 55163)]