20584240

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3257}}^1$

素因数の和:3349

約数の個数: 40

約数和(自身を含む): 48479040

約数和(自身を除く): 27894800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3257, 6320, 6514, 13028, 16285, 26056, 32570, 52112, 65140, 130280, 257303, 260560, 514606, 1029212, 1286515, 2058424, 2573030, 4116848, 5146060, 10292120, 20584240]

約数ペア:

[(1, 20584240), (2, 10292120), (4, 5146060), (5, 4116848), (8, 2573030), (10, 2058424), (16, 1286515), (20, 1029212), (40, 514606), (79, 260560), (80, 257303), (158, 130280), (316, 65140), (395, 52112), (632, 32570), (790, 26056), (1264, 16285), (1580, 13028), (3160, 6514), (3257, 6320)]