640497675

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{371303}}^1$

素因数の和:371339

約数の個数: 24

約数和(自身を含む): 1105000704

約数和(自身を除く): 464503029

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 371303, 1113909, 1856515, 5569545, 8539969, 9282575, 25619907, 27847725, 42699845, 128099535, 213499225, 640497675]

約数ペア:

[(1, 640497675), (3, 213499225), (5, 128099535), (15, 42699845), (23, 27847725), (25, 25619907), (69, 9282575), (75, 8539969), (115, 5569545), (345, 1856515), (575, 1113909), (1725, 371303)]