21406902

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 48881664

約数和(自身を除く): 27474762

約数列:

[1, 2, 3, 6, 11, 22, 33, 47, 66, 67, 94, 103, 134, 141, 201, 206, 282, 309, 402, 517, 618, 737, 1034, 1133, 1474, 1551, 2211, 2266, 3102, 3149, 3399, 4422, 4841, 6298, 6798, 6901, 9447, 9682, 13802, 14523, 18894, 20703, 29046, 34639, 41406, 53251, 69278, 75911, 103917, 106502, 151822, 159753, 207834, 227733, 319506, 324347, 455466, 648694, 973041, 1946082, 3567817, 7135634, 10703451, 21406902]

約数ペア:

[(1, 21406902), (2, 10703451), (3, 7135634), (6, 3567817), (11, 1946082), (22, 973041), (33, 648694), (47, 455466), (66, 324347), (67, 319506), (94, 227733), (103, 207834), (134, 159753), (141, 151822), (201, 106502), (206, 103917), (282, 75911), (309, 69278), (402, 53251), (517, 41406), (618, 34639), (737, 29046), (1034, 20703), (1133, 18894), (1474, 14523), (1551, 13802), (2211, 9682), (2266, 9447), (3102, 6901), (3149, 6798), (3399, 6298), (4422, 4841)]