128212520

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{13997}}^1$

素因数の和:14237

約数の個数: 32

約数和(自身を含む): 289758600

約数和(自身を除く): 161546080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 4580, 9160, 13997, 27994, 55988, 69985, 111976, 139970, 279940, 559880, 3205313, 6410626, 12821252, 16026565, 25642504, 32053130, 64106260, 128212520]

約数ペア:

[(1, 128212520), (2, 64106260), (4, 32053130), (5, 25642504), (8, 16026565), (10, 12821252), (20, 6410626), (40, 3205313), (229, 559880), (458, 279940), (916, 139970), (1145, 111976), (1832, 69985), (2290, 55988), (4580, 27994), (9160, 13997)]