221638197

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1\times {\mathrm{857}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 342486144

約数和(自身を除く): 120847947

約数列:

[1, 3, 11, 17, 33, 51, 187, 461, 561, 857, 1383, 2571, 5071, 7837, 9427, 14569, 15213, 23511, 28281, 43707, 86207, 160259, 258621, 395077, 480777, 1185231, 4345847, 6716309, 13037541, 20148927, 73879399, 221638197]

約数ペア:

[(1, 221638197), (3, 73879399), (11, 20148927), (17, 13037541), (33, 6716309), (51, 4345847), (187, 1185231), (461, 480777), (561, 395077), (857, 258621), (1383, 160259), (2571, 86207), (5071, 43707), (7837, 28281), (9427, 23511), (14569, 15213)]