260428287

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 449363376

約数和(自身を除く): 188935089

約数列:

[1, 3, 7, 17, 21, 23, 49, 51, 69, 119, 147, 161, 197, 357, 391, 483, 529, 591, 833, 1127, 1173, 1379, 1587, 2499, 2737, 3349, 3381, 3703, 4137, 4531, 8211, 8993, 9653, 10047, 11109, 13593, 19159, 23443, 25921, 26979, 28959, 31717, 57477, 62951, 70329, 77027, 77763, 95151, 104213, 164101, 188853, 222019, 231081, 312639, 440657, 492303, 539189, 666057, 729491, 1321971, 1617567, 1771621, 2188473, 3774323, 5106437, 5314863, 11322969, 12401347, 15319311, 37204041, 86809429, 260428287]

約数ペア:

[(1, 260428287), (3, 86809429), (7, 37204041), (17, 15319311), (21, 12401347), (23, 11322969), (49, 5314863), (51, 5106437), (69, 3774323), (119, 2188473), (147, 1771621), (161, 1617567), (197, 1321971), (357, 729491), (391, 666057), (483, 539189), (529, 492303), (591, 440657), (833, 312639), (1127, 231081), (1173, 222019), (1379, 188853), (1587, 164101), (2499, 104213), (2737, 95151), (3349, 77763), (3381, 77027), (3703, 70329), (4137, 62951), (4531, 57477), (8211, 31717), (8993, 28959), (9653, 26979), (10047, 25921), (11109, 23443), (13593, 19159)]