78640020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{436889}}^1$

素因数の和:436904

約数の個数: 36

約数和(自身を含む): 238541940

約数和(自身を除く): 159901920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 436889, 873778, 1310667, 1747556, 2184445, 2621334, 3932001, 4368890, 5242668, 6553335, 7864002, 8737780, 13106670, 15728004, 19660005, 26213340, 39320010, 78640020]

約数ペア:

[(1, 78640020), (2, 39320010), (3, 26213340), (4, 19660005), (5, 15728004), (6, 13106670), (9, 8737780), (10, 7864002), (12, 6553335), (15, 5242668), (18, 4368890), (20, 3932001), (30, 2621334), (36, 2184445), (45, 1747556), (60, 1310667), (90, 873778), (180, 436889)]