20561242725

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{96907}}^1$

素因数の和:96987

約数の個数: 72

約数和(自身を含む): 39366355392

約数和(自身を除く): 18805112667

約数列:

[1, 3, 5, 9, 15, 23, 25, 41, 45, 69, 75, 115, 123, 205, 207, 225, 345, 369, 575, 615, 943, 1025, 1035, 1725, 1845, 2829, 3075, 4715, 5175, 8487, 9225, 14145, 23575, 42435, 70725, 96907, 212175, 290721, 484535, 872163, 1453605, 2228861, 2422675, 3973187, 4360815, 6686583, 7268025, 11144305, 11919561, 19865935, 20059749, 21804075, 33432915, 35758683, 55721525, 59597805, 91383301, 99329675, 100298745, 167164575, 178793415, 274149903, 297989025, 456916505, 501493725, 822449709, 893967075, 1370749515, 2284582525, 4112248545, 6853747575, 20561242725]

約数ペア:

[(1, 20561242725), (3, 6853747575), (5, 4112248545), (9, 2284582525), (15, 1370749515), (23, 893967075), (25, 822449709), (41, 501493725), (45, 456916505), (69, 297989025), (75, 274149903), (115, 178793415), (123, 167164575), (205, 100298745), (207, 99329675), (225, 91383301), (345, 59597805), (369, 55721525), (575, 35758683), (615, 33432915), (943, 21804075), (1025, 20059749), (1035, 19865935), (1725, 11919561), (1845, 11144305), (2829, 7268025), (3075, 6686583), (4715, 4360815), (5175, 3973187), (8487, 2422675), (9225, 2228861), (14145, 1453605), (23575, 872163), (42435, 484535), (70725, 290721), (96907, 212175)]