81218995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3917}}^1$

素因数の和:3975

約数の個数: 32

約数和(自身を含む): 118480320

約数和(自身を除く): 37261325

約数列:

[1, 5, 11, 13, 29, 55, 65, 143, 145, 319, 377, 715, 1595, 1885, 3917, 4147, 19585, 20735, 43087, 50921, 113593, 215435, 254605, 560131, 567965, 1249523, 1476709, 2800655, 6247615, 7383545, 16243799, 81218995]

約数ペア:

[(1, 81218995), (5, 16243799), (11, 7383545), (13, 6247615), (29, 2800655), (55, 1476709), (65, 1249523), (143, 567965), (145, 560131), (319, 254605), (377, 215435), (715, 113593), (1595, 50921), (1885, 43087), (3917, 20735), (4147, 19585)]