17998020

素因数分解:

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

素因数の和:100004

約数の個数: 36

約数和(自身を含む): 54594540

約数和(自身を除く): 36596520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 99989, 199978, 299967, 399956, 499945, 599934, 899901, 999890, 1199868, 1499835, 1799802, 1999780, 2999670, 3599604, 4499505, 5999340, 8999010, 17998020]

約数ペア:

[(1, 17998020), (2, 8999010), (3, 5999340), (4, 4499505), (5, 3599604), (6, 2999670), (9, 1999780), (10, 1799802), (12, 1499835), (15, 1199868), (18, 999890), (20, 899901), (30, 599934), (36, 499945), (45, 399956), (60, 299967), (90, 199978), (180, 99989)]