123896920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{442489}}^1$

素因数の和:442507

約数の個数: 32

約数和(自身を含む): 318592800

約数和(自身を除く): 194695880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 442489, 884978, 1769956, 2212445, 3097423, 3539912, 4424890, 6194846, 8849780, 12389692, 15487115, 17699560, 24779384, 30974230, 61948460, 123896920]

約数ペア:

[(1, 123896920), (2, 61948460), (4, 30974230), (5, 24779384), (7, 17699560), (8, 15487115), (10, 12389692), (14, 8849780), (20, 6194846), (28, 4424890), (35, 3539912), (40, 3097423), (56, 2212445), (70, 1769956), (140, 884978), (280, 442489)]