816860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 1935360

約数和(自身を除く): 1118500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 79, 94, 110, 158, 188, 220, 235, 316, 395, 470, 517, 790, 869, 940, 1034, 1580, 1738, 2068, 2585, 3476, 3713, 4345, 5170, 7426, 8690, 10340, 14852, 17380, 18565, 37130, 40843, 74260, 81686, 163372, 204215, 408430, 816860]

約数ペア:

[(1, 816860), (2, 408430), (4, 204215), (5, 163372), (10, 81686), (11, 74260), (20, 40843), (22, 37130), (44, 18565), (47, 17380), (55, 14852), (79, 10340), (94, 8690), (110, 7426), (158, 5170), (188, 4345), (220, 3713), (235, 3476), (316, 2585), (395, 2068), (470, 1738), (517, 1580), (790, 1034), (869, 940)]