20930015

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 25745376

約数和(自身を除く): 4815361

約数列:

[1, 5, 61, 163, 305, 421, 815, 2105, 9943, 25681, 49715, 68623, 128405, 343115, 4186003, 20930015]

約数ペア:

[(1, 20930015), (5, 4186003), (61, 343115), (163, 128405), (305, 68623), (421, 49715), (815, 25681), (2105, 9943)]