49999280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20161}}^1$

素因数の和:20205

約数の個数: 40

約数和(自身を含む): 120004224

約数和(自身を除く): 70004944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20161, 40322, 80644, 100805, 161288, 201610, 322576, 403220, 624991, 806440, 1249982, 1612880, 2499964, 3124955, 4999928, 6249910, 9999856, 12499820, 24999640, 49999280]

約数ペア:

[(1, 49999280), (2, 24999640), (4, 12499820), (5, 9999856), (8, 6249910), (10, 4999928), (16, 3124955), (20, 2499964), (31, 1612880), (40, 1249982), (62, 806440), (80, 624991), (124, 403220), (155, 322576), (248, 201610), (310, 161288), (496, 100805), (620, 80644), (1240, 40322), (2480, 20161)]