19877709

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 28558368

約数和(自身を除く): 8680659

約数列:

[1, 3, 17, 51, 101, 227, 289, 303, 681, 867, 1717, 3859, 5151, 11577, 22927, 29189, 65603, 68781, 87567, 196809, 389759, 1169277, 6625903, 19877709]

約数ペア:

[(1, 19877709), (3, 6625903), (17, 1169277), (51, 389759), (101, 196809), (227, 87567), (289, 68781), (303, 65603), (681, 29189), (867, 22927), (1717, 11577), (3859, 5151)]