21803408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:172

約数の個数: 60

約数和(自身を含む): 47885328

約数和(自身を除く): 26081920

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 67, 86, 88, 134, 172, 176, 268, 344, 473, 536, 688, 737, 946, 1072, 1474, 1849, 1892, 2881, 2948, 3698, 3784, 5762, 5896, 7396, 7568, 11524, 11792, 14792, 20339, 23048, 29584, 31691, 40678, 46096, 63382, 81356, 123883, 126764, 162712, 247766, 253528, 325424, 495532, 507056, 991064, 1362713, 1982128, 2725426, 5450852, 10901704, 21803408]

約数ペア:

[(1, 21803408), (2, 10901704), (4, 5450852), (8, 2725426), (11, 1982128), (16, 1362713), (22, 991064), (43, 507056), (44, 495532), (67, 325424), (86, 253528), (88, 247766), (134, 162712), (172, 126764), (176, 123883), (268, 81356), (344, 63382), (473, 46096), (536, 40678), (688, 31691), (737, 29584), (946, 23048), (1072, 20339), (1474, 14792), (1849, 11792), (1892, 11524), (2881, 7568), (2948, 7396), (3698, 5896), (3784, 5762)]