128450440

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{11593}}^1$

素因数の和:11881

約数の個数: 32

約数和(自身を含む): 290081880

約数和(自身を除く): 161631440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 11593, 23186, 46372, 57965, 92744, 115930, 231860, 463720, 3211261, 6422522, 12845044, 16056305, 25690088, 32112610, 64225220, 128450440]

約数ペア:

[(1, 128450440), (2, 64225220), (4, 32112610), (5, 25690088), (8, 16056305), (10, 12845044), (20, 6422522), (40, 3211261), (277, 463720), (554, 231860), (1108, 115930), (1385, 92744), (2216, 57965), (2770, 46372), (5540, 23186), (11080, 11593)]