8378020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 20913984

約数和(自身を除く): 12535964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 103, 140, 166, 196, 206, 245, 332, 412, 415, 490, 515, 581, 721, 830, 980, 1030, 1162, 1442, 1660, 2060, 2324, 2884, 2905, 3605, 4067, 5047, 5810, 7210, 8134, 8549, 10094, 11620, 14420, 16268, 17098, 20188, 20335, 25235, 34196, 40670, 42745, 50470, 59843, 81340, 85490, 100940, 119686, 170980, 239372, 299215, 418901, 598430, 837802, 1196860, 1675604, 2094505, 4189010, 8378020]

約数ペア:

[(1, 8378020), (2, 4189010), (4, 2094505), (5, 1675604), (7, 1196860), (10, 837802), (14, 598430), (20, 418901), (28, 299215), (35, 239372), (49, 170980), (70, 119686), (83, 100940), (98, 85490), (103, 81340), (140, 59843), (166, 50470), (196, 42745), (206, 40670), (245, 34196), (332, 25235), (412, 20335), (415, 20188), (490, 17098), (515, 16268), (581, 14420), (721, 11620), (830, 10094), (980, 8549), (1030, 8134), (1162, 7210), (1442, 5810), (1660, 5047), (2060, 4067), (2324, 3605), (2884, 2905)]