68878257

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 107308800

約数和(自身を除く): 38430543

約数列:

[1, 3, 7, 21, 89, 137, 267, 269, 411, 623, 807, 959, 1869, 1883, 2877, 5649, 12193, 23941, 36579, 36853, 71823, 85351, 110559, 167587, 256053, 257971, 502761, 773913, 3279917, 9839751, 22959419, 68878257]

約数ペア:

[(1, 68878257), (3, 22959419), (7, 9839751), (21, 3279917), (89, 773913), (137, 502761), (267, 257971), (269, 256053), (411, 167587), (623, 110559), (807, 85351), (959, 71823), (1869, 36853), (1883, 36579), (2877, 23941), (5649, 12193)]