78399440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139999}}^1$

素因数の和:140019

約数の個数: 40

約数和(自身を含む): 208320000

約数和(自身を除く): 129920560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 139999, 279998, 559996, 699995, 979993, 1119992, 1399990, 1959986, 2239984, 2799980, 3919972, 4899965, 5599960, 7839944, 9799930, 11199920, 15679888, 19599860, 39199720, 78399440]

約数ペア:

[(1, 78399440), (2, 39199720), (4, 19599860), (5, 15679888), (7, 11199920), (8, 9799930), (10, 7839944), (14, 5599960), (16, 4899965), (20, 3919972), (28, 2799980), (35, 2239984), (40, 1959986), (56, 1399990), (70, 1119992), (80, 979993), (112, 699995), (140, 559996), (280, 279998), (560, 139999)]