21000865875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{20123}}^1$

素因数の和:20186

約数の個数: 96

約数和(自身を含む): 40083144192

約数和(自身を除く): 19082278317

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 121, 125, 165, 253, 275, 345, 363, 375, 575, 605, 759, 825, 1265, 1375, 1725, 1815, 2783, 2875, 3025, 3795, 4125, 6325, 8349, 8625, 9075, 13915, 15125, 18975, 20123, 31625, 41745, 45375, 60369, 69575, 94875, 100615, 208725, 221353, 301845, 347875, 462829, 503075, 664059, 1043625, 1106765, 1388487, 1509225, 2314145, 2434883, 2515375, 3320295, 5091119, 5533825, 6942435, 7304649, 7546125, 11570725, 12174415, 15273357, 16601475, 25455595, 27669125, 34712175, 36523245, 56002309, 57853625, 60872075, 76366785, 83007375, 127277975, 168006927, 173560875, 182616225, 280011545, 304360375, 381833925, 636389875, 840034635, 913081125, 1400057725, 1909169625, 4200173175, 7000288625, 21000865875]

約数ペア:

[(1, 21000865875), (3, 7000288625), (5, 4200173175), (11, 1909169625), (15, 1400057725), (23, 913081125), (25, 840034635), (33, 636389875), (55, 381833925), (69, 304360375), (75, 280011545), (115, 182616225), (121, 173560875), (125, 168006927), (165, 127277975), (253, 83007375), (275, 76366785), (345, 60872075), (363, 57853625), (375, 56002309), (575, 36523245), (605, 34712175), (759, 27669125), (825, 25455595), (1265, 16601475), (1375, 15273357), (1725, 12174415), (1815, 11570725), (2783, 7546125), (2875, 7304649), (3025, 6942435), (3795, 5533825), (4125, 5091119), (6325, 3320295), (8349, 2515375), (8625, 2434883), (9075, 2314145), (13915, 1509225), (15125, 1388487), (18975, 1106765), (20123, 1043625), (31625, 664059), (41745, 503075), (45375, 462829), (60369, 347875), (69575, 301845), (94875, 221353), (100615, 208725)]