2021818519

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{660941}}^1$

素因数の和:660990

約数の個数: 16

約数和(自身を含む): 2538017280

約数和(自身を除く): 516198761

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 660941, 4626587, 12557879, 15201643, 87905153, 106411501, 288831217, 2021818519]

約数ペア:

[(1, 2021818519), (7, 288831217), (19, 106411501), (23, 87905153), (133, 15201643), (161, 12557879), (437, 4626587), (3059, 660941)]