643984990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31307}}^1$

素因数の和:31353

約数の個数: 48

約数和(自身を含む): 1349124336

約数和(自身を除く): 705139346

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 121, 170, 187, 242, 374, 605, 935, 1210, 1870, 2057, 4114, 10285, 20570, 31307, 62614, 156535, 313070, 344377, 532219, 688754, 1064438, 1721885, 2661095, 3443770, 3788147, 5322190, 5854409, 7576294, 11708818, 18940735, 29272045, 37881470, 58544090, 64398499, 128796998, 321992495, 643984990]

約数ペア:

[(1, 643984990), (2, 321992495), (5, 128796998), (10, 64398499), (11, 58544090), (17, 37881470), (22, 29272045), (34, 18940735), (55, 11708818), (85, 7576294), (110, 5854409), (121, 5322190), (170, 3788147), (187, 3443770), (242, 2661095), (374, 1721885), (605, 1064438), (935, 688754), (1210, 532219), (1870, 344377), (2057, 313070), (4114, 156535), (10285, 62614), (20570, 31307)]