18977859

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{271}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 28514304

約数和(自身を除く): 9536445

約数列:

[1, 3, 9, 31, 93, 251, 271, 279, 753, 813, 2259, 2439, 7781, 8401, 23343, 25203, 68021, 70029, 75609, 204063, 612189, 2108651, 6325953, 18977859]

約数ペア:

[(1, 18977859), (3, 6325953), (9, 2108651), (31, 612189), (93, 204063), (251, 75609), (271, 70029), (279, 68021), (753, 25203), (813, 23343), (2259, 8401), (2439, 7781)]