99997520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{178567}}^1$

素因数の和:178587

約数の個数: 40

約数和(自身を含む): 265709184

約数和(自身を除く): 165711664

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 178567, 357134, 714268, 892835, 1249969, 1428536, 1785670, 2499938, 2857072, 3571340, 4999876, 6249845, 7142680, 9999752, 12499690, 14285360, 19999504, 24999380, 49998760, 99997520]

約数ペア:

[(1, 99997520), (2, 49998760), (4, 24999380), (5, 19999504), (7, 14285360), (8, 12499690), (10, 9999752), (14, 7142680), (16, 6249845), (20, 4999876), (28, 3571340), (35, 2857072), (40, 2499938), (56, 1785670), (70, 1428536), (80, 1249969), (112, 892835), (140, 714268), (280, 357134), (560, 178567)]