217698523

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:480

約数の個数: 36

約数和(自身を含む): 276587712

約数和(自身を除く): 58889189

約数列:

[1, 7, 19, 31, 49, 133, 217, 361, 397, 589, 931, 1519, 2527, 2779, 4123, 7543, 11191, 12307, 17689, 19453, 28861, 52801, 78337, 86149, 143317, 233833, 369607, 548359, 603043, 1003219, 1636831, 4442827, 7022533, 11457817, 31099789, 217698523]

約数ペア:

[(1, 217698523), (7, 31099789), (19, 11457817), (31, 7022533), (49, 4442827), (133, 1636831), (217, 1003219), (361, 603043), (397, 548359), (589, 369607), (931, 233833), (1519, 143317), (2527, 86149), (2779, 78337), (4123, 52801), (7543, 28861), (11191, 19453), (12307, 17689)]