2491390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 5171040

約数和(自身を除く): 2679650

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 71, 110, 121, 142, 145, 242, 290, 319, 355, 605, 638, 710, 781, 1210, 1562, 1595, 2059, 3190, 3509, 3905, 4118, 7018, 7810, 8591, 10295, 17182, 17545, 20590, 22649, 35090, 42955, 45298, 85910, 113245, 226490, 249139, 498278, 1245695, 2491390]

約数ペア:

[(1, 2491390), (2, 1245695), (5, 498278), (10, 249139), (11, 226490), (22, 113245), (29, 85910), (55, 45298), (58, 42955), (71, 35090), (110, 22649), (121, 20590), (142, 17545), (145, 17182), (242, 10295), (290, 8591), (319, 7810), (355, 7018), (605, 4118), (638, 3905), (710, 3509), (781, 3190), (1210, 2059), (1562, 1595)]