20178873080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1117}}^1\times {\mathrm{6361}}^1$

素因数の和:7560

約数の個数: 64

約数和(自身を含む): 46090399680

約数和(自身を除く): 25911526600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1117, 1420, 2234, 2840, 4468, 5585, 6361, 8936, 11170, 12722, 22340, 25444, 31805, 44680, 50888, 63610, 79307, 127220, 158614, 254440, 317228, 396535, 451631, 634456, 793070, 903262, 1586140, 1806524, 2258155, 3172280, 3613048, 4516310, 7105237, 9032620, 14210474, 18065240, 28420948, 35526185, 56841896, 71052370, 142104740, 284209480, 504471827, 1008943654, 2017887308, 2522359135, 4035774616, 5044718270, 10089436540, 20178873080]

約数ペア:

[(1, 20178873080), (2, 10089436540), (4, 5044718270), (5, 4035774616), (8, 2522359135), (10, 2017887308), (20, 1008943654), (40, 504471827), (71, 284209480), (142, 142104740), (284, 71052370), (355, 56841896), (568, 35526185), (710, 28420948), (1117, 18065240), (1420, 14210474), (2234, 9032620), (2840, 7105237), (4468, 4516310), (5585, 3613048), (6361, 3172280), (8936, 2258155), (11170, 1806524), (12722, 1586140), (22340, 903262), (25444, 793070), (31805, 634456), (44680, 451631), (50888, 396535), (63610, 317228), (79307, 254440), (127220, 158614)]