20191557

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{1181}}^1$

素因数の和:1364

約数の個数: 16

約数和(自身を含む): 27800640

約数和(自身を除く): 7609083

約数列:

[1, 3, 41, 123, 139, 417, 1181, 3543, 5699, 17097, 48421, 145263, 164159, 492477, 6730519, 20191557]

約数ペア:

[(1, 20191557), (3, 6730519), (41, 492477), (123, 164159), (139, 145263), (417, 48421), (1181, 17097), (3543, 5699)]