128288440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{458173}}^1$

素因数の和:458191

約数の個数: 32

約数和(自身を含む): 329885280

約数和(自身を除く): 201596840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 458173, 916346, 1832692, 2290865, 3207211, 3665384, 4581730, 6414422, 9163460, 12828844, 16036055, 18326920, 25657688, 32072110, 64144220, 128288440]

約数ペア:

[(1, 128288440), (2, 64144220), (4, 32072110), (5, 25657688), (7, 18326920), (8, 16036055), (10, 12828844), (14, 9163460), (20, 6414422), (28, 4581730), (35, 3665384), (40, 3207211), (56, 2290865), (70, 1832692), (140, 916346), (280, 458173)]