21135016

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 47393280

約数和(自身を除く): 26258264

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 67, 86, 131, 134, 172, 262, 268, 301, 344, 469, 524, 536, 602, 917, 938, 1048, 1204, 1834, 1876, 2408, 2881, 3668, 3752, 5633, 5762, 7336, 8777, 11266, 11524, 17554, 20167, 22532, 23048, 35108, 39431, 40334, 45064, 61439, 70216, 78862, 80668, 122878, 157724, 161336, 245756, 315448, 377411, 491512, 754822, 1509644, 2641877, 3019288, 5283754, 10567508, 21135016]

約数ペア:

[(1, 21135016), (2, 10567508), (4, 5283754), (7, 3019288), (8, 2641877), (14, 1509644), (28, 754822), (43, 491512), (56, 377411), (67, 315448), (86, 245756), (131, 161336), (134, 157724), (172, 122878), (262, 80668), (268, 78862), (301, 70216), (344, 61439), (469, 45064), (524, 40334), (536, 39431), (602, 35108), (917, 23048), (938, 22532), (1048, 20167), (1204, 17554), (1834, 11524), (1876, 11266), (2408, 8777), (2881, 7336), (3668, 5762), (3752, 5633)]