21091696

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77543}}^1$

素因数の和:77568

約数の個数: 20

約数和(自身を含む): 43269552

約数和(自身を除く): 22177856

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77543, 155086, 310172, 620344, 1240688, 1318231, 2636462, 5272924, 10545848, 21091696]

約数ペア:

[(1, 21091696), (2, 10545848), (4, 5272924), (8, 2636462), (16, 1318231), (17, 1240688), (34, 620344), (68, 310172), (136, 155086), (272, 77543)]