66948280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1321}}^1$

素因数の和:1520

約数の個数: 64

約数和(自身を含む): 173234880

約数和(自身を除く): 106286600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 724, 905, 1267, 1321, 1448, 1810, 2534, 2642, 3620, 5068, 5284, 6335, 6605, 7240, 9247, 10136, 10568, 12670, 13210, 18494, 25340, 26420, 36988, 46235, 50680, 52840, 73976, 92470, 184940, 239101, 369880, 478202, 956404, 1195505, 1673707, 1912808, 2391010, 3347414, 4782020, 6694828, 8368535, 9564040, 13389656, 16737070, 33474140, 66948280]

約数ペア:

[(1, 66948280), (2, 33474140), (4, 16737070), (5, 13389656), (7, 9564040), (8, 8368535), (10, 6694828), (14, 4782020), (20, 3347414), (28, 2391010), (35, 1912808), (40, 1673707), (56, 1195505), (70, 956404), (140, 478202), (181, 369880), (280, 239101), (362, 184940), (724, 92470), (905, 73976), (1267, 52840), (1321, 50680), (1448, 46235), (1810, 36988), (2534, 26420), (2642, 25340), (3620, 18494), (5068, 13210), (5284, 12670), (6335, 10568), (6605, 10136), (7240, 9247)]