80320280

素因数分解:

$2^3\times 5^1\times {\mathrm{1063}}^1\times {\mathrm{1889}}^1$

素因数の和:2963

約数の個数: 32

約数和(自身を含む): 180986400

約数和(自身を除く): 100666120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1063, 1889, 2126, 3778, 4252, 5315, 7556, 8504, 9445, 10630, 15112, 18890, 21260, 37780, 42520, 75560, 2008007, 4016014, 8032028, 10040035, 16064056, 20080070, 40160140, 80320280]

約数ペア:

[(1, 80320280), (2, 40160140), (4, 20080070), (5, 16064056), (8, 10040035), (10, 8032028), (20, 4016014), (40, 2008007), (1063, 75560), (1889, 42520), (2126, 37780), (3778, 21260), (4252, 18890), (5315, 15112), (7556, 10630), (8504, 9445)]