81858819

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:675

約数の個数: 32

約数和(自身を含む): 128342016

約数和(自身を除く): 46483197

約数列:

[1, 3, 7, 21, 47, 141, 197, 329, 421, 591, 987, 1263, 1379, 2947, 4137, 8841, 9259, 19787, 27777, 59361, 64813, 82937, 138509, 194439, 248811, 415527, 580559, 1741677, 3898039, 11694117, 27286273, 81858819]

約数ペア:

[(1, 81858819), (3, 27286273), (7, 11694117), (21, 3898039), (47, 1741677), (141, 580559), (197, 415527), (329, 248811), (421, 194439), (591, 138509), (987, 82937), (1263, 64813), (1379, 59361), (2947, 27777), (4137, 19787), (8841, 9259)]