20953305

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9907}}^1$

素因数の和:9965

約数の個数: 24

約数和(自身を含む): 37095552

約数和(自身を除く): 16142247

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9907, 29721, 49535, 89163, 148605, 445815, 465629, 1396887, 2328145, 4190661, 6984435, 20953305]

約数ペア:

[(1, 20953305), (3, 6984435), (5, 4190661), (9, 2328145), (15, 1396887), (45, 465629), (47, 445815), (141, 148605), (235, 89163), (423, 49535), (705, 29721), (2115, 9907)]