19356640

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{389}}^1$

素因数の和:715

約数の個数: 48

約数和(自身を含む): 45995040

約数和(自身を除く): 26638400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 389, 622, 778, 1244, 1555, 1556, 1945, 2488, 3110, 3112, 3890, 4976, 6220, 6224, 7780, 9952, 12440, 12448, 15560, 24880, 31120, 49760, 62240, 120979, 241958, 483916, 604895, 967832, 1209790, 1935664, 2419580, 3871328, 4839160, 9678320, 19356640]

約数ペア:

[(1, 19356640), (2, 9678320), (4, 4839160), (5, 3871328), (8, 2419580), (10, 1935664), (16, 1209790), (20, 967832), (32, 604895), (40, 483916), (80, 241958), (160, 120979), (311, 62240), (389, 49760), (622, 31120), (778, 24880), (1244, 15560), (1555, 12448), (1556, 12440), (1945, 9952), (2488, 7780), (3110, 6224), (3112, 6220), (3890, 4976)]