87021991

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{971}}^1$

素因数の和:1075

約数の個数: 24

約数和(自身を含む): 106375680

約数和(自身を除く): 19353689

約数列:

[1, 7, 31, 49, 59, 217, 413, 971, 1519, 1829, 2891, 6797, 12803, 30101, 47579, 57289, 89621, 210707, 401023, 1474949, 1775959, 2807161, 12431713, 87021991]

約数ペア:

[(1, 87021991), (7, 12431713), (31, 2807161), (49, 1775959), (59, 1474949), (217, 401023), (413, 210707), (971, 89621), (1519, 57289), (1829, 47579), (2891, 30101), (6797, 12803)]