18984231

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{557}}^1$

素因数の和:1111

約数の個数: 24

約数和(自身を含む): 31453344

約数和(自身を除く): 12469113

約数列:

[1, 3, 7, 9, 21, 63, 541, 557, 1623, 1671, 3787, 3899, 4869, 5013, 11361, 11697, 34083, 35091, 301337, 904011, 2109359, 2712033, 6328077, 18984231]

約数ペア:

[(1, 18984231), (3, 6328077), (7, 2712033), (9, 2109359), (21, 904011), (63, 301337), (541, 35091), (557, 34083), (1623, 11697), (1671, 11361), (3787, 5013), (3899, 4869)]