7211320

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1297}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 16354800

約数和(自身を除く): 9143480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1297, 1390, 2594, 2780, 5188, 5560, 6485, 10376, 12970, 25940, 51880, 180283, 360566, 721132, 901415, 1442264, 1802830, 3605660, 7211320]

約数ペア:

[(1, 7211320), (2, 3605660), (4, 1802830), (5, 1442264), (8, 901415), (10, 721132), (20, 360566), (40, 180283), (139, 51880), (278, 25940), (556, 12970), (695, 10376), (1112, 6485), (1297, 5560), (1390, 5188), (2594, 2780)]