21379336

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26520824

約数列:

[1, 2, 4, 8, 11, 17, 22, 31, 34, 44, 62, 68, 88, 124, 136, 187, 248, 341, 374, 461, 527, 682, 748, 922, 1054, 1364, 1496, 1844, 2108, 2728, 3688, 4216, 5071, 5797, 7837, 10142, 11594, 14291, 15674, 20284, 23188, 28582, 31348, 40568, 46376, 57164, 62696, 86207, 114328, 157201, 172414, 242947, 314402, 344828, 485894, 628804, 689656, 971788, 1257608, 1943576, 2672417, 5344834, 10689668, 21379336]

約数ペア:

[(1, 21379336), (2, 10689668), (4, 5344834), (8, 2672417), (11, 1943576), (17, 1257608), (22, 971788), (31, 689656), (34, 628804), (44, 485894), (62, 344828), (68, 314402), (88, 242947), (124, 172414), (136, 157201), (187, 114328), (248, 86207), (341, 62696), (374, 57164), (461, 46376), (527, 40568), (682, 31348), (748, 28582), (922, 23188), (1054, 20284), (1364, 15674), (1496, 14291), (1844, 11594), (2108, 10142), (2728, 7837), (3688, 5797), (4216, 5071)]