21345424

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2621}}^1$

素因数の和:3138

約数の個数: 20

約数和(自身を含む): 41453820

約数和(自身を除く): 20108396

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2621, 4072, 5242, 8144, 10484, 20968, 41936, 1334089, 2668178, 5336356, 10672712, 21345424]

約数ペア:

[(1, 21345424), (2, 10672712), (4, 5336356), (8, 2668178), (16, 1334089), (509, 41936), (1018, 20968), (2036, 10484), (2621, 8144), (4072, 5242)]