21690003

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1289}}^1$

素因数の和:1442

約数の個数: 16

約数和(自身を含む): 29721600

約数和(自身を除く): 8031597

約数列:

[1, 3, 71, 79, 213, 237, 1289, 3867, 5609, 16827, 91519, 101831, 274557, 305493, 7230001, 21690003]

約数ペア:

[(1, 21690003), (3, 7230001), (71, 305493), (79, 274557), (213, 101831), (237, 91519), (1289, 16827), (3867, 5609)]