21791512

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87869}}^1$

素因数の和:87906

約数の個数: 16

約数和(自身を含む): 42177600

約数和(自身を除く): 20386088

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87869, 175738, 351476, 702952, 2723939, 5447878, 10895756, 21791512]

約数ペア:

[(1, 21791512), (2, 10895756), (4, 5447878), (8, 2723939), (31, 702952), (62, 351476), (124, 175738), (248, 87869)]