20648961808

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{2609}}^1\times {\mathrm{6967}}^1$

素因数の和:9655

約数の個数: 40

約数和(自身を含む): 40592223360

約数和(自身を除く): 19943261552

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 2609, 5218, 6967, 10436, 13934, 20872, 27868, 41744, 55736, 111472, 185239, 370478, 494657, 740956, 989314, 1481912, 1978628, 2963824, 3957256, 7914512, 18176903, 36353806, 72707612, 145415224, 290830448, 1290560113, 2581120226, 5162240452, 10324480904, 20648961808]

約数ペア:

[(1, 20648961808), (2, 10324480904), (4, 5162240452), (8, 2581120226), (16, 1290560113), (71, 290830448), (142, 145415224), (284, 72707612), (568, 36353806), (1136, 18176903), (2609, 7914512), (5218, 3957256), (6967, 2963824), (10436, 1978628), (13934, 1481912), (20872, 989314), (27868, 740956), (41744, 494657), (55736, 370478), (111472, 185239)]