2779000

素因数分解:

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

素因数の和:425

約数の個数: 64

約数和(自身を含む): 7450560

約数和(自身を除く): 4671560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 397, 500, 700, 794, 875, 1000, 1400, 1588, 1750, 1985, 2779, 3176, 3500, 3970, 5558, 7000, 7940, 9925, 11116, 13895, 15880, 19850, 22232, 27790, 39700, 49625, 55580, 69475, 79400, 99250, 111160, 138950, 198500, 277900, 347375, 397000, 555800, 694750, 1389500, 2779000]

約数ペア:

[(1, 2779000), (2, 1389500), (4, 694750), (5, 555800), (7, 397000), (8, 347375), (10, 277900), (14, 198500), (20, 138950), (25, 111160), (28, 99250), (35, 79400), (40, 69475), (50, 55580), (56, 49625), (70, 39700), (100, 27790), (125, 22232), (140, 19850), (175, 15880), (200, 13895), (250, 11116), (280, 9925), (350, 7940), (397, 7000), (500, 5558), (700, 3970), (794, 3500), (875, 3176), (1000, 2779), (1400, 1985), (1588, 1750)]