78723170

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{449}}^1$

素因数の和:742

約数の個数: 32

約数和(自身を含む): 144342000

約数和(自身を除く): 65618830

約数列:

[1, 2, 5, 10, 89, 178, 197, 394, 445, 449, 890, 898, 985, 1970, 2245, 4490, 17533, 35066, 39961, 79922, 87665, 88453, 175330, 176906, 199805, 399610, 442265, 884530, 7872317, 15744634, 39361585, 78723170]

約数ペア:

[(1, 78723170), (2, 39361585), (5, 15744634), (10, 7872317), (89, 884530), (178, 442265), (197, 399610), (394, 199805), (445, 176906), (449, 175330), (890, 88453), (898, 87665), (985, 79922), (1970, 39961), (2245, 35066), (4490, 17533)]