207880981

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1$

素因数の和:519

約数の個数: 40

約数和(自身を含む): 280727424

約数和(自身を除く): 72846443

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 343, 463, 539, 833, 1309, 2401, 3241, 3773, 5093, 5831, 7871, 9163, 22687, 26411, 35651, 40817, 55097, 64141, 86581, 158809, 249557, 385679, 448987, 606067, 1111663, 1746899, 2699753, 4242469, 12228293, 18898271, 29697283, 207880981]

約数ペア:

[(1, 207880981), (7, 29697283), (11, 18898271), (17, 12228293), (49, 4242469), (77, 2699753), (119, 1746899), (187, 1111663), (343, 606067), (463, 448987), (539, 385679), (833, 249557), (1309, 158809), (2401, 86581), (3241, 64141), (3773, 55097), (5093, 40817), (5831, 35651), (7871, 26411), (9163, 22687)]