81899910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{101111}}^1$

素因数の和:101130

約数の個数: 40

約数和(自身を含む): 220221936

約数和(自身を除く): 138322026

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 101111, 202222, 303333, 505555, 606666, 909999, 1011110, 1516665, 1819998, 2729997, 3033330, 4549995, 5459994, 8189991, 9099990, 13649985, 16379982, 27299970, 40949955, 81899910]

約数ペア:

[(1, 81899910), (2, 40949955), (3, 27299970), (5, 16379982), (6, 13649985), (9, 9099990), (10, 8189991), (15, 5459994), (18, 4549995), (27, 3033330), (30, 2729997), (45, 1819998), (54, 1516665), (81, 1011110), (90, 909999), (135, 606666), (162, 505555), (270, 303333), (405, 202222), (810, 101111)]