21509283

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1\times {\mathrm{239}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 29145600

約数和(自身を除く): 7636317

約数列:

[1, 3, 131, 229, 239, 393, 687, 717, 29999, 31309, 54731, 89997, 93927, 164193, 7169761, 21509283]

約数ペア:

[(1, 21509283), (3, 7169761), (131, 164193), (229, 93927), (239, 89997), (393, 54731), (687, 31309), (717, 29999)]