21189140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:369

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 34694380

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 29, 34, 35, 58, 68, 70, 85, 116, 119, 140, 145, 170, 203, 238, 290, 307, 340, 406, 476, 493, 580, 595, 614, 812, 986, 1015, 1190, 1228, 1535, 1972, 2030, 2149, 2380, 2465, 3070, 3451, 4060, 4298, 4930, 5219, 6140, 6902, 8596, 8903, 9860, 10438, 10745, 13804, 17255, 17806, 20876, 21490, 26095, 34510, 35612, 36533, 42980, 44515, 52190, 62321, 69020, 73066, 89030, 104380, 124642, 146132, 151351, 178060, 182665, 249284, 302702, 311605, 365330, 605404, 623210, 730660, 756755, 1059457, 1246420, 1513510, 2118914, 3027020, 4237828, 5297285, 10594570, 21189140]

約数ペア:

[(1, 21189140), (2, 10594570), (4, 5297285), (5, 4237828), (7, 3027020), (10, 2118914), (14, 1513510), (17, 1246420), (20, 1059457), (28, 756755), (29, 730660), (34, 623210), (35, 605404), (58, 365330), (68, 311605), (70, 302702), (85, 249284), (116, 182665), (119, 178060), (140, 151351), (145, 146132), (170, 124642), (203, 104380), (238, 89030), (290, 73066), (307, 69020), (340, 62321), (406, 52190), (476, 44515), (493, 42980), (580, 36533), (595, 35612), (614, 34510), (812, 26095), (986, 21490), (1015, 20876), (1190, 17806), (1228, 17255), (1535, 13804), (1972, 10745), (2030, 10438), (2149, 9860), (2380, 8903), (2465, 8596), (3070, 6902), (3451, 6140), (4060, 5219), (4298, 4930)]