18638641

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 22071168

約数和(自身を除く): 3432527

約数列:

[1, 7, 41, 101, 287, 643, 707, 4141, 4501, 26363, 28987, 64943, 184541, 454601, 2662663, 18638641]

約数ペア:

[(1, 18638641), (7, 2662663), (41, 454601), (101, 184541), (287, 64943), (643, 28987), (707, 26363), (4141, 4501)]