1397990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:268

約数の個数: 32

約数和(自身を含む): 2799360

約数和(自身を除く): 1401370

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 179, 355, 358, 710, 781, 895, 1562, 1790, 1969, 3905, 3938, 7810, 9845, 12709, 19690, 25418, 63545, 127090, 139799, 279598, 698995, 1397990]

約数ペア:

[(1, 1397990), (2, 698995), (5, 279598), (10, 139799), (11, 127090), (22, 63545), (55, 25418), (71, 19690), (110, 12709), (142, 9845), (179, 7810), (355, 3938), (358, 3905), (710, 1969), (781, 1790), (895, 1562)]