28850840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5189}}^1$

素因数の和:5339

約数の個数: 32

約数和(自身を含む): 65394000

約数和(自身を除く): 36543160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5189, 5560, 10378, 20756, 25945, 41512, 51890, 103780, 207560, 721271, 1442542, 2885084, 3606355, 5770168, 7212710, 14425420, 28850840]

約数ペア:

[(1, 28850840), (2, 14425420), (4, 7212710), (5, 5770168), (8, 3606355), (10, 2885084), (20, 1442542), (40, 721271), (139, 207560), (278, 103780), (556, 51890), (695, 41512), (1112, 25945), (1390, 20756), (2780, 10378), (5189, 5560)]