681311600

素因数分解:

$2^4\times 5^2\times {\mathrm{491}}^1\times {\mathrm{3469}}^1$

素因数の和:3978

約数の個数: 60

約数和(自身を含む): 1640657640

約数和(自身を除く): 959346040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 491, 982, 1964, 2455, 3469, 3928, 4910, 6938, 7856, 9820, 12275, 13876, 17345, 19640, 24550, 27752, 34690, 39280, 49100, 55504, 69380, 86725, 98200, 138760, 173450, 196400, 277520, 346900, 693800, 1387600, 1703279, 3406558, 6813116, 8516395, 13626232, 17032790, 27252464, 34065580, 42581975, 68131160, 85163950, 136262320, 170327900, 340655800, 681311600]

約数ペア:

[(1, 681311600), (2, 340655800), (4, 170327900), (5, 136262320), (8, 85163950), (10, 68131160), (16, 42581975), (20, 34065580), (25, 27252464), (40, 17032790), (50, 13626232), (80, 8516395), (100, 6813116), (200, 3406558), (400, 1703279), (491, 1387600), (982, 693800), (1964, 346900), (2455, 277520), (3469, 196400), (3928, 173450), (4910, 138760), (6938, 98200), (7856, 86725), (9820, 69380), (12275, 55504), (13876, 49100), (17345, 39280), (19640, 34690), (24550, 27752)]