21359982

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29443218

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 97, 98, 107, 147, 194, 214, 291, 294, 321, 343, 582, 642, 679, 686, 749, 1029, 1358, 1498, 2037, 2058, 2247, 4074, 4494, 4753, 5243, 9506, 10379, 10486, 14259, 15729, 20758, 28518, 31137, 31458, 33271, 36701, 62274, 66542, 72653, 73402, 99813, 110103, 145306, 199626, 217959, 220206, 435918, 508571, 1017142, 1525713, 3051426, 3559997, 7119994, 10679991, 21359982]

約数ペア:

[(1, 21359982), (2, 10679991), (3, 7119994), (6, 3559997), (7, 3051426), (14, 1525713), (21, 1017142), (42, 508571), (49, 435918), (97, 220206), (98, 217959), (107, 199626), (147, 145306), (194, 110103), (214, 99813), (291, 73402), (294, 72653), (321, 66542), (343, 62274), (582, 36701), (642, 33271), (679, 31458), (686, 31137), (749, 28518), (1029, 20758), (1358, 15729), (1498, 14259), (2037, 10486), (2058, 10379), (2247, 9506), (4074, 5243), (4494, 4753)]