82780811920

素因数分解:

$2^4\times 5^1\times {\mathrm{13249}}^1\times {\mathrm{78101}}^1$

素因数の和:91363

約数の個数: 40

約数和(自身を含む): 192482379000

約数和(自身を除く): 109701567080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 13249, 26498, 52996, 66245, 78101, 105992, 132490, 156202, 211984, 264980, 312404, 390505, 529960, 624808, 781010, 1059920, 1249616, 1562020, 3124040, 6248080, 1034760149, 2069520298, 4139040596, 5173800745, 8278081192, 10347601490, 16556162384, 20695202980, 41390405960, 82780811920]

約数ペア:

[(1, 82780811920), (2, 41390405960), (4, 20695202980), (5, 16556162384), (8, 10347601490), (10, 8278081192), (16, 5173800745), (20, 4139040596), (40, 2069520298), (80, 1034760149), (13249, 6248080), (26498, 3124040), (52996, 1562020), (66245, 1249616), (78101, 1059920), (105992, 781010), (132490, 624808), (156202, 529960), (211984, 390505), (264980, 312404)]