21177800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2161}}^1$

素因数の和:2191

約数の個数: 72

約数和(自身を含む): 57303810

約数和(自身を除く): 36126010

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2161, 2450, 4322, 4900, 8644, 9800, 10805, 15127, 17288, 21610, 30254, 43220, 54025, 60508, 75635, 86440, 105889, 108050, 121016, 151270, 211778, 216100, 302540, 378175, 423556, 432200, 529445, 605080, 756350, 847112, 1058890, 1512700, 2117780, 2647225, 3025400, 4235560, 5294450, 10588900, 21177800]

約数ペア:

[(1, 21177800), (2, 10588900), (4, 5294450), (5, 4235560), (7, 3025400), (8, 2647225), (10, 2117780), (14, 1512700), (20, 1058890), (25, 847112), (28, 756350), (35, 605080), (40, 529445), (49, 432200), (50, 423556), (56, 378175), (70, 302540), (98, 216100), (100, 211778), (140, 151270), (175, 121016), (196, 108050), (200, 105889), (245, 86440), (280, 75635), (350, 60508), (392, 54025), (490, 43220), (700, 30254), (980, 21610), (1225, 17288), (1400, 15127), (1960, 10805), (2161, 9800), (2450, 8644), (4322, 4900)]