27996920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{99989}}^1$

素因数の和:100007

約数の個数: 32

約数和(自身を含む): 71992800

約数和(自身を除く): 43995880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 99989, 199978, 399956, 499945, 699923, 799912, 999890, 1399846, 1999780, 2799692, 3499615, 3999560, 5599384, 6999230, 13998460, 27996920]

約数ペア:

[(1, 27996920), (2, 13998460), (4, 6999230), (5, 5599384), (7, 3999560), (8, 3499615), (10, 2799692), (14, 1999780), (20, 1399846), (28, 999890), (35, 799912), (40, 699923), (56, 499945), (70, 399956), (140, 199978), (280, 99989)]