261152815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{1879}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 412577280

約数和(自身を除く): 151424465

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 361, 385, 665, 1045, 1463, 1805, 1879, 2527, 3971, 7315, 9395, 12635, 13153, 19855, 20669, 27797, 35701, 65765, 103345, 138985, 144683, 178505, 249907, 392711, 678319, 723415, 1249535, 1963555, 2748977, 3391595, 4748233, 7461509, 13744885, 23741165, 37307545, 52230563, 261152815]

約数ペア:

[(1, 261152815), (5, 52230563), (7, 37307545), (11, 23741165), (19, 13744885), (35, 7461509), (55, 4748233), (77, 3391595), (95, 2748977), (133, 1963555), (209, 1249535), (361, 723415), (385, 678319), (665, 392711), (1045, 249907), (1463, 178505), (1805, 144683), (1879, 138985), (2527, 103345), (3971, 65765), (7315, 35701), (9395, 27797), (12635, 20669), (13153, 19855)]