78381018

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{61331}}^1$

素因数の和:61410

約数の個数: 24

約数和(自身を含む): 172220256

約数和(自身を除く): 93839238

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 61331, 122662, 183993, 367986, 551979, 1103958, 4354501, 8709002, 13063503, 26127006, 39190509, 78381018]

約数ペア:

[(1, 78381018), (2, 39190509), (3, 26127006), (6, 13063503), (9, 8709002), (18, 4354501), (71, 1103958), (142, 551979), (213, 367986), (426, 183993), (639, 122662), (1278, 61331)]