72340280

素因数分解:

$2^3\times 5^1\times {\mathrm{1808507}}^1$

素因数の和:1808518

約数の個数: 16

約数和(自身を含む): 162765720

約数和(自身を除く): 90425440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1808507, 3617014, 7234028, 9042535, 14468056, 18085070, 36170140, 72340280]

約数ペア:

[(1, 72340280), (2, 36170140), (4, 18085070), (5, 14468056), (8, 9042535), (10, 7234028), (20, 3617014), (40, 1808507)]