20621937

素因数分解:

$3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{3821}}^1$

素因数の和:4088

約数の個数: 16

約数和(自身を含む): 31554432

約数和(自身を除く): 10932495

約数列:

[1, 3, 7, 21, 257, 771, 1799, 3821, 5397, 11463, 26747, 80241, 981997, 2945991, 6873979, 20621937]

約数ペア:

[(1, 20621937), (3, 6873979), (7, 2945991), (21, 981997), (257, 80241), (771, 26747), (1799, 11463), (3821, 5397)]