128941280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61991}}^1$

素因数の和:62019

約数の個数: 48

約数和(自身を含む): 328061664

約数和(自身を除く): 199120384

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 61991, 123982, 247964, 309955, 495928, 619910, 805883, 991856, 1239820, 1611766, 1983712, 2479640, 3223532, 4029415, 4959280, 6447064, 8058830, 9918560, 12894128, 16117660, 25788256, 32235320, 64470640, 128941280]

約数ペア:

[(1, 128941280), (2, 64470640), (4, 32235320), (5, 25788256), (8, 16117660), (10, 12894128), (13, 9918560), (16, 8058830), (20, 6447064), (26, 4959280), (32, 4029415), (40, 3223532), (52, 2479640), (65, 1983712), (80, 1611766), (104, 1239820), (130, 991856), (160, 805883), (208, 619910), (260, 495928), (416, 309955), (520, 247964), (1040, 123982), (2080, 61991)]