21990327842

素因数分解:

$2^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{2383517}}^1$

素因数の和:2384185

約数の個数: 16

約数和(自身を含む): 37754925120

約数和(自身を除く): 15764597278

約数列:

[1, 2, 7, 14, 659, 1318, 4613, 9226, 2383517, 4767034, 16684619, 33369238, 1570737703, 3141475406, 10995163921, 21990327842]

約数ペア:

[(1, 21990327842), (2, 10995163921), (7, 3141475406), (14, 1570737703), (659, 33369238), (1318, 16684619), (4613, 4767034), (9226, 2383517)]