21026754

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1531}}^1$

素因数の和:1655

約数の個数: 48

約数和(自身を含む): 52578240

約数和(自身を除く): 31551486

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 109, 126, 218, 327, 654, 763, 981, 1526, 1531, 1962, 2289, 3062, 4578, 4593, 6867, 9186, 10717, 13734, 13779, 21434, 27558, 32151, 64302, 96453, 166879, 192906, 333758, 500637, 1001274, 1168153, 1501911, 2336306, 3003822, 3504459, 7008918, 10513377, 21026754]

約数ペア:

[(1, 21026754), (2, 10513377), (3, 7008918), (6, 3504459), (7, 3003822), (9, 2336306), (14, 1501911), (18, 1168153), (21, 1001274), (42, 500637), (63, 333758), (109, 192906), (126, 166879), (218, 96453), (327, 64302), (654, 32151), (763, 27558), (981, 21434), (1526, 13779), (1531, 13734), (1962, 10717), (2289, 9186), (3062, 6867), (4578, 4593)]