259880

素因数分解:

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

素因数の和:173

約数の個数: 32

約数和(自身を含む): 599400

約数和(自身を除く): 339520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 89, 146, 178, 292, 356, 365, 445, 584, 712, 730, 890, 1460, 1780, 2920, 3560, 6497, 12994, 25988, 32485, 51976, 64970, 129940, 259880]

約数ペア:

[(1, 259880), (2, 129940), (4, 64970), (5, 51976), (8, 32485), (10, 25988), (20, 12994), (40, 6497), (73, 3560), (89, 2920), (146, 1780), (178, 1460), (292, 890), (356, 730), (365, 712), (445, 584)]