1391320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4969}}^1$

素因数の和:4987

約数の個数: 32

約数和(自身を含む): 3578400

約数和(自身を除く): 2187080

約数列:

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

約数ペア:

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