20121247964

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^2\times {\mathrm{1109}}^1$

素因数の和:1311

約数の個数: 72

約数和(自身を含む): 38094507360

約数和(自身を除く): 17973259396

約数列:

[1, 2, 4, 23, 46, 53, 61, 92, 106, 122, 212, 244, 1109, 1219, 1403, 2218, 2438, 2806, 3233, 3721, 4436, 4876, 5612, 6466, 7442, 12932, 14884, 25507, 51014, 58777, 67649, 74359, 85583, 102028, 117554, 135298, 148718, 171166, 197213, 235108, 270596, 297436, 342332, 394426, 788852, 1351871, 1555927, 2703742, 3111854, 3585397, 4126589, 4535899, 5407484, 6223708, 7170794, 8253178, 9071798, 14341588, 16506356, 18143596, 82464131, 94911547, 164928262, 189823094, 218709217, 329856524, 379646188, 437418434, 874836868, 5030311991, 10060623982, 20121247964]

約数ペア:

[(1, 20121247964), (2, 10060623982), (4, 5030311991), (23, 874836868), (46, 437418434), (53, 379646188), (61, 329856524), (92, 218709217), (106, 189823094), (122, 164928262), (212, 94911547), (244, 82464131), (1109, 18143596), (1219, 16506356), (1403, 14341588), (2218, 9071798), (2438, 8253178), (2806, 7170794), (3233, 6223708), (3721, 5407484), (4436, 4535899), (4876, 4126589), (5612, 3585397), (6466, 3111854), (7442, 2703742), (12932, 1555927), (14884, 1351871), (25507, 788852), (51014, 394426), (58777, 342332), (67649, 297436), (74359, 270596), (85583, 235108), (102028, 197213), (117554, 171166), (135298, 148718)]