21421878

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{155231}}^1$

素因数の和:155259

約数の個数: 16

約数和(自身を含む): 44706816

約数和(自身を除く): 23284938

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 155231, 310462, 465693, 931386, 3570313, 7140626, 10710939, 21421878]

約数ペア:

[(1, 21421878), (2, 10710939), (3, 7140626), (6, 3570313), (23, 931386), (46, 465693), (69, 310462), (138, 155231)]