20967870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:370

約数の個数: 128

約数和(自身を含む): 65111040

約数和(自身を除く): 44143170

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 29, 30, 33, 35, 42, 55, 58, 66, 70, 77, 87, 105, 110, 145, 154, 165, 174, 203, 210, 231, 290, 313, 319, 330, 385, 406, 435, 462, 609, 626, 638, 770, 870, 939, 957, 1015, 1155, 1218, 1565, 1595, 1878, 1914, 2030, 2191, 2233, 2310, 3045, 3130, 3190, 3443, 4382, 4466, 4695, 4785, 6090, 6573, 6699, 6886, 9077, 9390, 9570, 10329, 10955, 11165, 13146, 13398, 17215, 18154, 20658, 21910, 22330, 24101, 27231, 32865, 33495, 34430, 45385, 48202, 51645, 54462, 63539, 65730, 66990, 72303, 90770, 99847, 103290, 120505, 127078, 136155, 144606, 190617, 199694, 241010, 272310, 299541, 317695, 361515, 381234, 499235, 599082, 635390, 698929, 723030, 953085, 998470, 1397858, 1497705, 1906170, 2096787, 2995410, 3494645, 4193574, 6989290, 10483935, 20967870]

約数ペア:

[(1, 20967870), (2, 10483935), (3, 6989290), (5, 4193574), (6, 3494645), (7, 2995410), (10, 2096787), (11, 1906170), (14, 1497705), (15, 1397858), (21, 998470), (22, 953085), (29, 723030), (30, 698929), (33, 635390), (35, 599082), (42, 499235), (55, 381234), (58, 361515), (66, 317695), (70, 299541), (77, 272310), (87, 241010), (105, 199694), (110, 190617), (145, 144606), (154, 136155), (165, 127078), (174, 120505), (203, 103290), (210, 99847), (231, 90770), (290, 72303), (313, 66990), (319, 65730), (330, 63539), (385, 54462), (406, 51645), (435, 48202), (462, 45385), (609, 34430), (626, 33495), (638, 32865), (770, 27231), (870, 24101), (939, 22330), (957, 21910), (1015, 20658), (1155, 18154), (1218, 17215), (1565, 13398), (1595, 13146), (1878, 11165), (1914, 10955), (2030, 10329), (2191, 9570), (2233, 9390), (2310, 9077), (3045, 6886), (3130, 6699), (3190, 6573), (3443, 6090), (4382, 4785), (4466, 4695)]