21222256

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 48934368

約数和(自身を除く): 27712112

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 41, 44, 68, 82, 88, 136, 164, 173, 176, 187, 272, 328, 346, 374, 451, 656, 692, 697, 748, 902, 1384, 1394, 1496, 1804, 1903, 2768, 2788, 2941, 2992, 3608, 3806, 5576, 5882, 7093, 7216, 7612, 7667, 11152, 11764, 14186, 15224, 15334, 23528, 28372, 30448, 30668, 32351, 47056, 56744, 61336, 64702, 78023, 113488, 120581, 122672, 129404, 156046, 241162, 258808, 312092, 482324, 517616, 624184, 964648, 1248368, 1326391, 1929296, 2652782, 5305564, 10611128, 21222256]

約数ペア:

[(1, 21222256), (2, 10611128), (4, 5305564), (8, 2652782), (11, 1929296), (16, 1326391), (17, 1248368), (22, 964648), (34, 624184), (41, 517616), (44, 482324), (68, 312092), (82, 258808), (88, 241162), (136, 156046), (164, 129404), (173, 122672), (176, 120581), (187, 113488), (272, 78023), (328, 64702), (346, 61336), (374, 56744), (451, 47056), (656, 32351), (692, 30668), (697, 30448), (748, 28372), (902, 23528), (1384, 15334), (1394, 15224), (1496, 14186), (1804, 11764), (1903, 11152), (2768, 7667), (2788, 7612), (2941, 7216), (2992, 7093), (3608, 5882), (3806, 5576)]