19981923

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1217}}^1$

素因数の和:1654

約数の個数: 16

約数和(自身を含む): 28783776

約数和(自身を除く): 8801853

約数列:

[1, 3, 13, 39, 421, 1217, 1263, 3651, 5473, 15821, 16419, 47463, 512357, 1537071, 6660641, 19981923]

約数ペア:

[(1, 19981923), (3, 6660641), (13, 1537071), (39, 512357), (421, 47463), (1217, 16419), (1263, 15821), (3651, 5473)]