217871555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{947}}^1$

素因数の和:1099

約数の個数: 32

約数和(自身を含む): 294865920

約数和(自身を除く): 76994365

約数列:

[1, 5, 11, 47, 55, 89, 235, 445, 517, 947, 979, 2585, 4183, 4735, 4895, 10417, 20915, 44509, 46013, 52085, 84283, 222545, 230065, 421415, 489599, 927113, 2447995, 3961301, 4635565, 19806505, 43574311, 217871555]

約数ペア:

[(1, 217871555), (5, 43574311), (11, 19806505), (47, 4635565), (55, 3961301), (89, 2447995), (235, 927113), (445, 489599), (517, 421415), (947, 230065), (979, 222545), (2585, 84283), (4183, 52085), (4735, 46013), (4895, 44509), (10417, 20915)]