128412440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246947}}^1$

素因数の和:246971

約数の個数: 32

約数和(自身を含む): 311154480

約数和(自身を除く): 182742040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246947, 493894, 987788, 1234735, 1975576, 2469470, 3210311, 4938940, 6420622, 9877880, 12841244, 16051555, 25682488, 32103110, 64206220, 128412440]

約数ペア:

[(1, 128412440), (2, 64206220), (4, 32103110), (5, 25682488), (8, 16051555), (10, 12841244), (13, 9877880), (20, 6420622), (26, 4938940), (40, 3210311), (52, 2469470), (65, 1975576), (104, 1234735), (130, 987788), (260, 493894), (520, 246947)]