27881931

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 48394368

約数和(自身を除く): 20512437

約数列:

[1, 3, 7, 11, 21, 33, 43, 49, 77, 129, 147, 231, 301, 401, 473, 539, 903, 1203, 1419, 1617, 2107, 2807, 3311, 4411, 6321, 8421, 9933, 13233, 17243, 19649, 23177, 30877, 51729, 58947, 69531, 92631, 120701, 189673, 216139, 362103, 569019, 648417, 844907, 1327711, 2534721, 3983133, 9293977, 27881931]

約数ペア:

[(1, 27881931), (3, 9293977), (7, 3983133), (11, 2534721), (21, 1327711), (33, 844907), (43, 648417), (49, 569019), (77, 362103), (129, 216139), (147, 189673), (231, 120701), (301, 92631), (401, 69531), (473, 58947), (539, 51729), (903, 30877), (1203, 23177), (1419, 19649), (1617, 17243), (2107, 13233), (2807, 9933), (3311, 8421), (4411, 6321)]