21086331

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12782469

約数列:

[1, 3, 7, 21, 23, 69, 149, 161, 293, 447, 483, 879, 1043, 2051, 3129, 3427, 6153, 6739, 10281, 20217, 23989, 43657, 47173, 71967, 130971, 141519, 305599, 916797, 1004111, 3012333, 7028777, 21086331]

約数ペア:

[(1, 21086331), (3, 7028777), (7, 3012333), (21, 1004111), (23, 916797), (69, 305599), (149, 141519), (161, 130971), (293, 71967), (447, 47173), (483, 43657), (879, 23989), (1043, 20217), (2051, 10281), (3129, 6739), (3427, 6153)]