221552163

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{49531}}^1$

素因数の和:49615

約数の個数: 24

約数和(自身を含む): 370895616

約数和(自身を除く): 149343453

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 49531, 148593, 346717, 445779, 1040151, 3120453, 3516701, 10550103, 24616907, 31650309, 73850721, 221552163]

約数ペア:

[(1, 221552163), (3, 73850721), (7, 31650309), (9, 24616907), (21, 10550103), (63, 3516701), (71, 3120453), (213, 1040151), (497, 445779), (639, 346717), (1491, 148593), (4473, 49531)]