639856

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:241

約数の個数: 40

約数和(自身を含む): 1473120

約数和(自身を除く): 833264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 197, 203, 232, 394, 406, 464, 788, 812, 1379, 1576, 1624, 2758, 3152, 3248, 5516, 5713, 11032, 11426, 22064, 22852, 39991, 45704, 79982, 91408, 159964, 319928, 639856]

約数ペア:

[(1, 639856), (2, 319928), (4, 159964), (7, 91408), (8, 79982), (14, 45704), (16, 39991), (28, 22852), (29, 22064), (56, 11426), (58, 11032), (112, 5713), (116, 5516), (197, 3248), (203, 3152), (232, 2758), (394, 1624), (406, 1576), (464, 1379), (788, 812)]