18890315

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 25380864

約数和(自身を除く): 6490549

約数列:

[1, 5, 17, 31, 67, 85, 107, 155, 335, 527, 535, 1139, 1819, 2077, 2635, 3317, 5695, 7169, 9095, 10385, 16585, 35309, 35845, 56389, 121873, 176545, 222239, 281945, 609365, 1111195, 3778063, 18890315]

約数ペア:

[(1, 18890315), (5, 3778063), (17, 1111195), (31, 609365), (67, 281945), (85, 222239), (107, 176545), (155, 121873), (335, 56389), (527, 35845), (535, 35309), (1139, 16585), (1819, 10385), (2077, 9095), (2635, 7169), (3317, 5695)]