21356838

素因数分解:

$2^1\times 3^3\times {\mathrm{617}}^1\times {\mathrm{641}}^1$

素因数の和:1269

約数の個数: 32

約数和(自身を含む): 47610720

約数和(自身を除く): 26253882

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 617, 641, 1234, 1282, 1851, 1923, 3702, 3846, 5553, 5769, 11106, 11538, 16659, 17307, 33318, 34614, 395497, 790994, 1186491, 2372982, 3559473, 7118946, 10678419, 21356838]

約数ペア:

[(1, 21356838), (2, 10678419), (3, 7118946), (6, 3559473), (9, 2372982), (18, 1186491), (27, 790994), (54, 395497), (617, 34614), (641, 33318), (1234, 17307), (1282, 16659), (1851, 11538), (1923, 11106), (3702, 5769), (3846, 5553)]