18920151

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1021}}^1$

素因数の和:1127

約数の個数: 24

約数和(自身を含む): 28697760

約数和(自身を除く): 9777609

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1021, 2059, 3063, 6177, 9189, 18531, 29609, 72491, 88827, 217473, 266481, 652419, 2102239, 6306717, 18920151]

約数ペア:

[(1, 18920151), (3, 6306717), (9, 2102239), (29, 652419), (71, 266481), (87, 217473), (213, 88827), (261, 72491), (639, 29609), (1021, 18531), (2059, 9189), (3063, 6177)]