12791900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 31404240

約数和(自身を除く): 18612340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 100, 110, 116, 145, 220, 275, 290, 319, 401, 550, 580, 638, 725, 802, 1100, 1276, 1450, 1595, 1604, 2005, 2900, 3190, 4010, 4411, 6380, 7975, 8020, 8822, 10025, 11629, 15950, 17644, 20050, 22055, 23258, 31900, 40100, 44110, 46516, 58145, 88220, 110275, 116290, 127919, 220550, 232580, 255838, 290725, 441100, 511676, 581450, 639595, 1162900, 1279190, 2558380, 3197975, 6395950, 12791900]

約数ペア:

[(1, 12791900), (2, 6395950), (4, 3197975), (5, 2558380), (10, 1279190), (11, 1162900), (20, 639595), (22, 581450), (25, 511676), (29, 441100), (44, 290725), (50, 255838), (55, 232580), (58, 220550), (100, 127919), (110, 116290), (116, 110275), (145, 88220), (220, 58145), (275, 46516), (290, 44110), (319, 40100), (401, 31900), (550, 23258), (580, 22055), (638, 20050), (725, 17644), (802, 15950), (1100, 11629), (1276, 10025), (1450, 8822), (1595, 8020), (1604, 7975), (2005, 6380), (2900, 4411), (3190, 4010)]