19905687

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1439}}^1$

素因数の和:1527

約数の個数: 24

約数和(自身を含む): 30326400

約数和(自身を除く): 10420713

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 1439, 1537, 4317, 4611, 12951, 13833, 41731, 76267, 125193, 228801, 375579, 686403, 2211743, 6635229, 19905687]

約数ペア:

[(1, 19905687), (3, 6635229), (9, 2211743), (29, 686403), (53, 375579), (87, 228801), (159, 125193), (261, 76267), (477, 41731), (1439, 13833), (1537, 12951), (4317, 4611)]