2782640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{4969}}^1$

素因数の和:4989

約数の個数: 40

約数和(自身を含む): 7395360

約数和(自身を除く): 4612720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 4969, 9938, 19876, 24845, 34783, 39752, 49690, 69566, 79504, 99380, 139132, 173915, 198760, 278264, 347830, 397520, 556528, 695660, 1391320, 2782640]

約数ペア:

[(1, 2782640), (2, 1391320), (4, 695660), (5, 556528), (7, 397520), (8, 347830), (10, 278264), (14, 198760), (16, 173915), (20, 139132), (28, 99380), (35, 79504), (40, 69566), (56, 49690), (70, 39752), (80, 34783), (112, 24845), (140, 19876), (280, 9938), (560, 4969)]