18178072

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 38064600

約数和(自身を除く): 19886528

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 121, 178, 211, 242, 356, 422, 484, 712, 844, 968, 979, 1688, 1958, 2321, 3916, 4642, 7832, 9284, 10769, 18568, 18779, 21538, 25531, 37558, 43076, 51062, 75116, 86152, 102124, 150232, 204248, 206569, 413138, 826276, 1652552, 2272259, 4544518, 9089036, 18178072]

約数ペア:

[(1, 18178072), (2, 9089036), (4, 4544518), (8, 2272259), (11, 1652552), (22, 826276), (44, 413138), (88, 206569), (89, 204248), (121, 150232), (178, 102124), (211, 86152), (242, 75116), (356, 51062), (422, 43076), (484, 37558), (712, 25531), (844, 21538), (968, 18779), (979, 18568), (1688, 10769), (1958, 9284), (2321, 7832), (3916, 4642)]