261561201

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{463}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 432967680

約数和(自身を除く): 171406479

約数列:

[1, 3, 11, 17, 19, 33, 51, 53, 57, 159, 187, 209, 323, 463, 561, 583, 627, 901, 969, 1007, 1389, 1749, 2703, 3021, 3553, 5093, 7871, 8797, 9911, 10659, 11077, 15279, 17119, 23613, 24539, 26391, 29733, 33231, 51357, 73617, 86581, 96767, 149549, 188309, 259743, 269929, 290301, 417163, 448647, 466241, 564927, 809787, 1251489, 1398723, 1645039, 4588793, 4935117, 5128651, 7926097, 13766379, 15385953, 23778291, 87187067, 261561201]

約数ペア:

[(1, 261561201), (3, 87187067), (11, 23778291), (17, 15385953), (19, 13766379), (33, 7926097), (51, 5128651), (53, 4935117), (57, 4588793), (159, 1645039), (187, 1398723), (209, 1251489), (323, 809787), (463, 564927), (561, 466241), (583, 448647), (627, 417163), (901, 290301), (969, 269929), (1007, 259743), (1389, 188309), (1749, 149549), (2703, 96767), (3021, 86581), (3553, 73617), (5093, 51357), (7871, 33231), (8797, 29733), (9911, 26391), (10659, 24539), (11077, 23613), (15279, 17119)]