17820277480

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1\times {\mathrm{21397}}^1$

素因数の和:21898

約数の個数: 64

約数和(自身を含む): 41043075840

約数和(自身を除く): 23222798360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 443, 470, 886, 940, 1772, 1880, 2215, 3544, 4430, 8860, 17720, 20821, 21397, 41642, 42794, 83284, 85588, 104105, 106985, 166568, 171176, 208210, 213970, 416420, 427940, 832840, 855880, 1005659, 2011318, 4022636, 5028295, 8045272, 9478871, 10056590, 18957742, 20113180, 37915484, 40226360, 47394355, 75830968, 94788710, 189577420, 379154840, 445506937, 891013874, 1782027748, 2227534685, 3564055496, 4455069370, 8910138740, 17820277480]

約数ペア:

[(1, 17820277480), (2, 8910138740), (4, 4455069370), (5, 3564055496), (8, 2227534685), (10, 1782027748), (20, 891013874), (40, 445506937), (47, 379154840), (94, 189577420), (188, 94788710), (235, 75830968), (376, 47394355), (443, 40226360), (470, 37915484), (886, 20113180), (940, 18957742), (1772, 10056590), (1880, 9478871), (2215, 8045272), (3544, 5028295), (4430, 4022636), (8860, 2011318), (17720, 1005659), (20821, 855880), (21397, 832840), (41642, 427940), (42794, 416420), (83284, 213970), (85588, 208210), (104105, 171176), (106985, 166568)]