1299400

素因数分解:

$2^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 3096900

約数和(自身を除く): 1797500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 73, 89, 100, 146, 178, 200, 292, 356, 365, 445, 584, 712, 730, 890, 1460, 1780, 1825, 2225, 2920, 3560, 3650, 4450, 6497, 7300, 8900, 12994, 14600, 17800, 25988, 32485, 51976, 64970, 129940, 162425, 259880, 324850, 649700, 1299400]

約数ペア:

[(1, 1299400), (2, 649700), (4, 324850), (5, 259880), (8, 162425), (10, 129940), (20, 64970), (25, 51976), (40, 32485), (50, 25988), (73, 17800), (89, 14600), (100, 12994), (146, 8900), (178, 7300), (200, 6497), (292, 4450), (356, 3650), (365, 3560), (445, 2920), (584, 2225), (712, 1825), (730, 1780), (890, 1460)]