1242440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 2835000

約数和(自身を除く): 1592560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 349, 356, 445, 698, 712, 890, 1396, 1745, 1780, 2792, 3490, 3560, 6980, 13960, 31061, 62122, 124244, 155305, 248488, 310610, 621220, 1242440]

約数ペア:

[(1, 1242440), (2, 621220), (4, 310610), (5, 248488), (8, 155305), (10, 124244), (20, 62122), (40, 31061), (89, 13960), (178, 6980), (349, 3560), (356, 3490), (445, 2792), (698, 1780), (712, 1745), (890, 1396)]