28078869

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{631}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 46434304

約数和(自身を除く): 18355435

約数列:

[1, 3, 7, 13, 21, 39, 91, 163, 273, 489, 631, 1141, 1893, 2119, 3423, 4417, 6357, 8203, 13251, 14833, 24609, 44499, 57421, 102853, 172263, 308559, 719971, 1337089, 2159913, 4011267, 9359623, 28078869]

約数ペア:

[(1, 28078869), (3, 9359623), (7, 4011267), (13, 2159913), (21, 1337089), (39, 719971), (91, 308559), (163, 172263), (273, 102853), (489, 57421), (631, 44499), (1141, 24609), (1893, 14833), (2119, 13251), (3423, 8203), (4417, 6357)]