1389500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{397}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 3476928

約数和(自身を除く): 2087428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 397, 500, 700, 794, 875, 1588, 1750, 1985, 2779, 3500, 3970, 5558, 7940, 9925, 11116, 13895, 19850, 27790, 39700, 49625, 55580, 69475, 99250, 138950, 198500, 277900, 347375, 694750, 1389500]

約数ペア:

[(1, 1389500), (2, 694750), (4, 347375), (5, 277900), (7, 198500), (10, 138950), (14, 99250), (20, 69475), (25, 55580), (28, 49625), (35, 39700), (50, 27790), (70, 19850), (100, 13895), (125, 11116), (140, 9925), (175, 7940), (250, 5558), (350, 3970), (397, 3500), (500, 2779), (700, 1985), (794, 1750), (875, 1588)]