1999060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 4878720

約数和(自身を除く): 2879660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 131, 140, 218, 262, 436, 524, 545, 655, 763, 917, 1090, 1310, 1526, 1834, 2180, 2620, 3052, 3668, 3815, 4585, 7630, 9170, 14279, 15260, 18340, 28558, 57116, 71395, 99953, 142790, 199906, 285580, 399812, 499765, 999530, 1999060]

約数ペア:

[(1, 1999060), (2, 999530), (4, 499765), (5, 399812), (7, 285580), (10, 199906), (14, 142790), (20, 99953), (28, 71395), (35, 57116), (70, 28558), (109, 18340), (131, 15260), (140, 14279), (218, 9170), (262, 7630), (436, 4585), (524, 3815), (545, 3668), (655, 3052), (763, 2620), (917, 2180), (1090, 1834), (1310, 1526)]