81579290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{653}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 163654344

約数和(自身を除く): 82075054

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 653, 806, 961, 1306, 1922, 2015, 3265, 4030, 4805, 6530, 8489, 9610, 12493, 16978, 20243, 24986, 40486, 42445, 62465, 84890, 101215, 124930, 202430, 263159, 526318, 627533, 1255066, 1315795, 2631590, 3137665, 6275330, 8157929, 16315858, 40789645, 81579290]

約数ペア:

[(1, 81579290), (2, 40789645), (5, 16315858), (10, 8157929), (13, 6275330), (26, 3137665), (31, 2631590), (62, 1315795), (65, 1255066), (130, 627533), (155, 526318), (310, 263159), (403, 202430), (653, 124930), (806, 101215), (961, 84890), (1306, 62465), (1922, 42445), (2015, 40486), (3265, 24986), (4030, 20243), (4805, 16978), (6530, 12493), (8489, 9610)]