21790908

素因数分解:

$2^2\times 3^2\times {\mathrm{61}}^1\times {\mathrm{9923}}^1$

素因数の和:9994

約数の個数: 36

約数和(自身を含む): 55991208

約数和(自身を除く): 34200300

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 61, 122, 183, 244, 366, 549, 732, 1098, 2196, 9923, 19846, 29769, 39692, 59538, 89307, 119076, 178614, 357228, 605303, 1210606, 1815909, 2421212, 3631818, 5447727, 7263636, 10895454, 21790908]

約数ペア:

[(1, 21790908), (2, 10895454), (3, 7263636), (4, 5447727), (6, 3631818), (9, 2421212), (12, 1815909), (18, 1210606), (36, 605303), (61, 357228), (122, 178614), (183, 119076), (244, 89307), (366, 59538), (549, 39692), (732, 29769), (1098, 19846), (2196, 9923)]