78681561

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{467}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 122923008

約数和(自身を除く): 44241447

約数列:

[1, 3, 7, 21, 71, 113, 213, 339, 467, 497, 791, 1401, 1491, 2373, 3269, 8023, 9807, 24069, 33157, 52771, 56161, 99471, 158313, 168483, 232099, 369397, 696297, 1108191, 3746741, 11240223, 26227187, 78681561]

約数ペア:

[(1, 78681561), (3, 26227187), (7, 11240223), (21, 3746741), (71, 1108191), (113, 696297), (213, 369397), (339, 232099), (467, 168483), (497, 158313), (791, 99471), (1401, 56161), (1491, 52771), (2373, 33157), (3269, 24069), (8023, 9807)]