21231938

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2713}}^1$

素因数の和:2778

約数の個数: 32

約数和(自身を含む): 40123776

約数和(自身を除く): 18891838

約数列:

[1, 2, 7, 13, 14, 26, 43, 86, 91, 182, 301, 559, 602, 1118, 2713, 3913, 5426, 7826, 18991, 35269, 37982, 70538, 116659, 233318, 246883, 493766, 816613, 1516567, 1633226, 3033134, 10615969, 21231938]

約数ペア:

[(1, 21231938), (2, 10615969), (7, 3033134), (13, 1633226), (14, 1516567), (26, 816613), (43, 493766), (86, 246883), (91, 233318), (182, 116659), (301, 70538), (559, 37982), (602, 35269), (1118, 18991), (2713, 7826), (3913, 5426)]