217217215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 281548800

約数和(自身を除く): 64331585

約数列:

[1, 5, 19, 79, 95, 103, 281, 395, 515, 1405, 1501, 1957, 5339, 7505, 8137, 9785, 22199, 26695, 28943, 40685, 110995, 144715, 154603, 421781, 549917, 773015, 2108905, 2286497, 2749585, 11432485, 43443443, 217217215]

約数ペア:

[(1, 217217215), (5, 43443443), (19, 11432485), (79, 2749585), (95, 2286497), (103, 2108905), (281, 773015), (395, 549917), (515, 421781), (1405, 154603), (1501, 144715), (1957, 110995), (5339, 40685), (7505, 28943), (8137, 26695), (9785, 22199)]