20818290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{693943}}^1$

素因数の和:693953

約数の個数: 16

約数和(自身を含む): 49963968

約数和(自身を除く): 29145678

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 693943, 1387886, 2081829, 3469715, 4163658, 6939430, 10409145, 20818290]

約数ペア:

[(1, 20818290), (2, 10409145), (3, 6939430), (5, 4163658), (6, 3469715), (10, 2081829), (15, 1387886), (30, 693943)]