19391495

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 6459385

約数列:

[1, 5, 19, 43, 47, 95, 101, 215, 235, 505, 817, 893, 1919, 2021, 4085, 4343, 4465, 4747, 9595, 10105, 21715, 23735, 38399, 82517, 90193, 191995, 204121, 412585, 450965, 1020605, 3878299, 19391495]

約数ペア:

[(1, 19391495), (5, 3878299), (19, 1020605), (43, 450965), (47, 412585), (95, 204121), (101, 191995), (215, 90193), (235, 82517), (505, 38399), (817, 23735), (893, 21715), (1919, 10105), (2021, 9595), (4085, 4747), (4343, 4465)]