21051753

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{1627}}^1$

素因数の和:1876

約数の個数: 16

約数和(自身を含む): 29694720

約数和(自身を除く): 8642967

約数列:

[1, 3, 19, 57, 227, 681, 1627, 4313, 4881, 12939, 30913, 92739, 369329, 1107987, 7017251, 21051753]

約数ペア:

[(1, 21051753), (3, 7017251), (19, 1107987), (57, 369329), (227, 92739), (681, 30913), (1627, 12939), (4313, 4881)]