21497696

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:567

約数の個数: 48

約数和(自身を含む): 46584720

約数和(自身を除く): 25087024

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 157, 176, 314, 352, 389, 628, 778, 1256, 1556, 1727, 2512, 3112, 3454, 4279, 5024, 6224, 6908, 8558, 12448, 13816, 17116, 27632, 34232, 55264, 61073, 68464, 122146, 136928, 244292, 488584, 671803, 977168, 1343606, 1954336, 2687212, 5374424, 10748848, 21497696]

約数ペア:

[(1, 21497696), (2, 10748848), (4, 5374424), (8, 2687212), (11, 1954336), (16, 1343606), (22, 977168), (32, 671803), (44, 488584), (88, 244292), (157, 136928), (176, 122146), (314, 68464), (352, 61073), (389, 55264), (628, 34232), (778, 27632), (1256, 17116), (1556, 13816), (1727, 12448), (2512, 8558), (3112, 6908), (3454, 6224), (4279, 5024)]