21307768

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{26371}}^1$

素因数の和:26478

約数の個数: 16

約数和(自身を含む): 40349160

約数和(自身を除く): 19041392

約数列:

[1, 2, 4, 8, 101, 202, 404, 808, 26371, 52742, 105484, 210968, 2663471, 5326942, 10653884, 21307768]

約数ペア:

[(1, 21307768), (2, 10653884), (4, 5326942), (8, 2663471), (101, 210968), (202, 105484), (404, 52742), (808, 26371)]