17886220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 43570800

約数和(自身を除く): 25684580

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 209, 220, 242, 380, 389, 418, 484, 605, 778, 836, 1045, 1210, 1556, 1945, 2090, 2299, 2420, 3890, 4180, 4279, 4598, 7391, 7780, 8558, 9196, 11495, 14782, 17116, 21395, 22990, 29564, 36955, 42790, 45980, 47069, 73910, 81301, 85580, 94138, 147820, 162602, 188276, 235345, 325204, 406505, 470690, 813010, 894311, 941380, 1626020, 1788622, 3577244, 4471555, 8943110, 17886220]

約数ペア:

[(1, 17886220), (2, 8943110), (4, 4471555), (5, 3577244), (10, 1788622), (11, 1626020), (19, 941380), (20, 894311), (22, 813010), (38, 470690), (44, 406505), (55, 325204), (76, 235345), (95, 188276), (110, 162602), (121, 147820), (190, 94138), (209, 85580), (220, 81301), (242, 73910), (380, 47069), (389, 45980), (418, 42790), (484, 36955), (605, 29564), (778, 22990), (836, 21395), (1045, 17116), (1210, 14782), (1556, 11495), (1945, 9196), (2090, 8558), (2299, 7780), (2420, 7391), (3890, 4598), (4180, 4279)]