19971700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 50191232

約数和(自身を除く): 30219532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 277, 350, 412, 515, 554, 700, 721, 1030, 1108, 1385, 1442, 1939, 2060, 2575, 2770, 2884, 3605, 3878, 5150, 5540, 6925, 7210, 7756, 9695, 10300, 13850, 14420, 18025, 19390, 27700, 28531, 36050, 38780, 48475, 57062, 72100, 96950, 114124, 142655, 193900, 199717, 285310, 399434, 570620, 713275, 798868, 998585, 1426550, 1997170, 2853100, 3994340, 4992925, 9985850, 19971700]

約数ペア:

[(1, 19971700), (2, 9985850), (4, 4992925), (5, 3994340), (7, 2853100), (10, 1997170), (14, 1426550), (20, 998585), (25, 798868), (28, 713275), (35, 570620), (50, 399434), (70, 285310), (100, 199717), (103, 193900), (140, 142655), (175, 114124), (206, 96950), (277, 72100), (350, 57062), (412, 48475), (515, 38780), (554, 36050), (700, 28531), (721, 27700), (1030, 19390), (1108, 18025), (1385, 14420), (1442, 13850), (1939, 10300), (2060, 9695), (2575, 7756), (2770, 7210), (2884, 6925), (3605, 5540), (3878, 5150)]