18794215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 25915392

約数和(自身を除く): 7121177

約数列:

[1, 5, 11, 31, 55, 73, 151, 155, 341, 365, 755, 803, 1661, 1705, 2263, 4015, 4681, 8305, 11023, 11315, 23405, 24893, 51491, 55115, 121253, 124465, 257455, 341713, 606265, 1708565, 3758843, 18794215]

約数ペア:

[(1, 18794215), (5, 3758843), (11, 1708565), (31, 606265), (55, 341713), (73, 257455), (151, 124465), (155, 121253), (341, 55115), (365, 51491), (755, 24893), (803, 23405), (1661, 11315), (1705, 11023), (2263, 8305), (4015, 4681)]