81644391

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{1907}}^1$

素因数の和:2051

約数の個数: 24

約数和(自身を含む): 121440384

約数和(自身を除く): 39795993

約数列:

[1, 3, 9, 67, 71, 201, 213, 603, 639, 1907, 4757, 5721, 14271, 17163, 42813, 127769, 135397, 383307, 406191, 1149921, 1218573, 9071599, 27214797, 81644391]

約数ペア:

[(1, 81644391), (3, 27214797), (9, 9071599), (67, 1218573), (71, 1149921), (201, 406191), (213, 383307), (603, 135397), (639, 127769), (1907, 42813), (4757, 17163), (5721, 14271)]