20512704004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{129209}}^1$

素因数の和:129340

約数の個数: 48

約数和(自身を含む): 40115053440

約数和(自身を除く): 19602349436

約数列:

[1, 2, 4, 13, 26, 43, 52, 71, 86, 142, 172, 284, 559, 923, 1118, 1846, 2236, 3053, 3692, 6106, 12212, 39689, 79378, 129209, 158756, 258418, 516836, 1679717, 3359434, 5555987, 6718868, 9173839, 11111974, 18347678, 22223948, 36695356, 72227831, 119259907, 144455662, 238519814, 288911324, 394475077, 477039628, 788950154, 1577900308, 5128176001, 10256352002, 20512704004]

約数ペア:

[(1, 20512704004), (2, 10256352002), (4, 5128176001), (13, 1577900308), (26, 788950154), (43, 477039628), (52, 394475077), (71, 288911324), (86, 238519814), (142, 144455662), (172, 119259907), (284, 72227831), (559, 36695356), (923, 22223948), (1118, 18347678), (1846, 11111974), (2236, 9173839), (3053, 6718868), (3692, 5555987), (6106, 3359434), (12212, 1679717), (39689, 516836), (79378, 258418), (129209, 158756)]