8782180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 21450240

約数和(自身を除く): 12668060

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 191, 209, 220, 242, 380, 382, 418, 484, 605, 764, 836, 955, 1045, 1210, 1910, 2090, 2101, 2299, 2420, 3629, 3820, 4180, 4202, 4598, 7258, 8404, 9196, 10505, 11495, 14516, 18145, 21010, 22990, 23111, 36290, 39919, 42020, 45980, 46222, 72580, 79838, 92444, 115555, 159676, 199595, 231110, 399190, 439109, 462220, 798380, 878218, 1756436, 2195545, 4391090, 8782180]

約数ペア:

[(1, 8782180), (2, 4391090), (4, 2195545), (5, 1756436), (10, 878218), (11, 798380), (19, 462220), (20, 439109), (22, 399190), (38, 231110), (44, 199595), (55, 159676), (76, 115555), (95, 92444), (110, 79838), (121, 72580), (190, 46222), (191, 45980), (209, 42020), (220, 39919), (242, 36290), (380, 23111), (382, 22990), (418, 21010), (484, 18145), (605, 14516), (764, 11495), (836, 10505), (955, 9196), (1045, 8404), (1210, 7258), (1910, 4598), (2090, 4202), (2101, 4180), (2299, 3820), (2420, 3629)]