123291280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{220163}}^1$

素因数の和:220183

約数の個数: 40

約数和(自身を含む): 327604032

約数和(自身を除く): 204312752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 220163, 440326, 880652, 1100815, 1541141, 1761304, 2201630, 3082282, 3522608, 4403260, 6164564, 7705705, 8806520, 12329128, 15411410, 17613040, 24658256, 30822820, 61645640, 123291280]

約数ペア:

[(1, 123291280), (2, 61645640), (4, 30822820), (5, 24658256), (7, 17613040), (8, 15411410), (10, 12329128), (14, 8806520), (16, 7705705), (20, 6164564), (28, 4403260), (35, 3522608), (40, 3082282), (56, 2201630), (70, 1761304), (80, 1541141), (112, 1100815), (140, 880652), (280, 440326), (560, 220163)]