21805712

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15313}}^1$

素因数の和:15410

約数の個数: 20

約数和(自身を含む): 42726060

約数和(自身を除く): 20920348

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15313, 30626, 61252, 122504, 245008, 1362857, 2725714, 5451428, 10902856, 21805712]

約数ペア:

[(1, 21805712), (2, 10902856), (4, 5451428), (8, 2725714), (16, 1362857), (89, 245008), (178, 122504), (356, 61252), (712, 30626), (1424, 15313)]