128727560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247553}}^1$

素因数の和:247577

約数の個数: 32

約数和(自身を含む): 311918040

約数和(自身を除く): 183190480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 247553, 495106, 990212, 1237765, 1980424, 2475530, 3218189, 4951060, 6436378, 9902120, 12872756, 16090945, 25745512, 32181890, 64363780, 128727560]

約数ペア:

[(1, 128727560), (2, 64363780), (4, 32181890), (5, 25745512), (8, 16090945), (10, 12872756), (13, 9902120), (20, 6436378), (26, 4951060), (40, 3218189), (52, 2475530), (65, 1980424), (104, 1237765), (130, 990212), (260, 495106), (520, 247553)]