80972020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{14009}}^1$

素因数の和:14052

約数の個数: 36

約数和(自身を含む): 180644940

約数和(自身を除く): 99672920

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 14009, 28018, 56036, 70045, 140090, 238153, 280180, 476306, 952612, 1190765, 2381530, 4048601, 4763060, 8097202, 16194404, 20243005, 40486010, 80972020]

約数ペア:

[(1, 80972020), (2, 40486010), (4, 20243005), (5, 16194404), (10, 8097202), (17, 4763060), (20, 4048601), (34, 2381530), (68, 1190765), (85, 952612), (170, 476306), (289, 280180), (340, 238153), (578, 140090), (1156, 70045), (1445, 56036), (2890, 28018), (5780, 14009)]