20441757

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11814243

約数列:

[1, 3, 7, 21, 47, 139, 141, 149, 329, 417, 447, 973, 987, 1043, 2919, 3129, 6533, 7003, 19599, 20711, 21009, 45731, 49021, 62133, 137193, 144977, 147063, 434931, 973417, 2920251, 6813919, 20441757]

約数ペア:

[(1, 20441757), (3, 6813919), (7, 2920251), (21, 973417), (47, 434931), (139, 147063), (141, 144977), (149, 137193), (329, 62133), (417, 49021), (447, 45731), (973, 21009), (987, 20711), (1043, 19599), (2919, 7003), (3129, 6533)]