81941660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{631}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 177526272

約数和(自身を除く): 95584612

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 151, 172, 215, 302, 430, 604, 631, 755, 860, 1262, 1510, 2524, 3020, 3155, 6310, 6493, 12620, 12986, 25972, 27133, 32465, 54266, 64930, 95281, 108532, 129860, 135665, 190562, 271330, 381124, 476405, 542660, 952810, 1905620, 4097083, 8194166, 16388332, 20485415, 40970830, 81941660]

約数ペア:

[(1, 81941660), (2, 40970830), (4, 20485415), (5, 16388332), (10, 8194166), (20, 4097083), (43, 1905620), (86, 952810), (151, 542660), (172, 476405), (215, 381124), (302, 271330), (430, 190562), (604, 135665), (631, 129860), (755, 108532), (860, 95281), (1262, 64930), (1510, 54266), (2524, 32465), (3020, 27133), (3155, 25972), (6310, 12986), (6493, 12620)]