18208988785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{983}}^1$

素因数の和:1378

約数の個数: 64

約数和(自身を含む): 25233223680

約数和(自身を除く): 7024234895

約数列:

[1, 5, 13, 29, 31, 65, 145, 155, 317, 377, 403, 899, 983, 1585, 1885, 2015, 4121, 4495, 4915, 9193, 9827, 11687, 12779, 20605, 28507, 30473, 45965, 49135, 58435, 63895, 119509, 127751, 142535, 152365, 284983, 311611, 370591, 396149, 597545, 638755, 883717, 1424915, 1558055, 1852955, 1980745, 3704779, 4050943, 4418585, 9036719, 9659941, 11488321, 18523895, 20254715, 45183595, 48299705, 57441605, 117477347, 125579233, 280138289, 587386735, 627896165, 1400691445, 3641797757, 18208988785]

約数ペア:

[(1, 18208988785), (5, 3641797757), (13, 1400691445), (29, 627896165), (31, 587386735), (65, 280138289), (145, 125579233), (155, 117477347), (317, 57441605), (377, 48299705), (403, 45183595), (899, 20254715), (983, 18523895), (1585, 11488321), (1885, 9659941), (2015, 9036719), (4121, 4418585), (4495, 4050943), (4915, 3704779), (9193, 1980745), (9827, 1852955), (11687, 1558055), (12779, 1424915), (20605, 883717), (28507, 638755), (30473, 597545), (45965, 396149), (49135, 370591), (58435, 311611), (63895, 284983), (119509, 152365), (127751, 142535)]