218368521

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{39841}}^1$

素因数の和:39886

約数の個数: 32

約数和(自身を含む): 382483200

約数和(自身を除く): 164114679

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 5481, 39841, 119523, 278887, 358569, 836661, 1075707, 1155389, 2509983, 3466167, 7529949, 8087723, 10398501, 24263169, 31195503, 72789507, 218368521]

約数ペア:

[(1, 218368521), (3, 72789507), (7, 31195503), (9, 24263169), (21, 10398501), (27, 8087723), (29, 7529949), (63, 3466167), (87, 2509983), (189, 1155389), (203, 1075707), (261, 836661), (609, 358569), (783, 278887), (1827, 119523), (5481, 39841)]