21908995

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 29767680

約数和(自身を除く): 7858685

約数列:

[1, 5, 19, 23, 37, 95, 115, 185, 271, 437, 703, 851, 1355, 2185, 3515, 4255, 5149, 6233, 10027, 16169, 25745, 31165, 50135, 80845, 118427, 190513, 230621, 592135, 952565, 1153105, 4381799, 21908995]

約数ペア:

[(1, 21908995), (5, 4381799), (19, 1153105), (23, 952565), (37, 592135), (95, 230621), (115, 190513), (185, 118427), (271, 80845), (437, 50135), (703, 31165), (851, 25745), (1355, 16169), (2185, 10027), (3515, 6233), (4255, 5149)]