21081105616

素因数分解:

$2^4\times {\mathrm{2693}}^1\times {\mathrm{489257}}^1$

素因数の和:491958

約数の個数: 20

約数和(自身を含む): 40859892612

約数和(自身を除く): 19778786996

約数列:

[1, 2, 4, 8, 16, 2693, 5386, 10772, 21544, 43088, 489257, 978514, 1957028, 3914056, 7828112, 1317569101, 2635138202, 5270276404, 10540552808, 21081105616]

約数ペア:

[(1, 21081105616), (2, 10540552808), (4, 5270276404), (8, 2635138202), (16, 1317569101), (2693, 7828112), (5386, 3914056), (10772, 1957028), (21544, 978514), (43088, 489257)]