21662590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1613}}^1$

素因数の和:1716

約数の個数: 32

約数和(自身を含む): 41834880

約数和(自身を除く): 20172290

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1613, 2686, 3226, 6715, 8065, 13430, 16130, 27421, 54842, 127427, 137105, 254854, 274210, 637135, 1274270, 2166259, 4332518, 10831295, 21662590]

約数ペア:

[(1, 21662590), (2, 10831295), (5, 4332518), (10, 2166259), (17, 1274270), (34, 637135), (79, 274210), (85, 254854), (158, 137105), (170, 127427), (395, 54842), (790, 27421), (1343, 16130), (1613, 13430), (2686, 8065), (3226, 6715)]