257681220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{4294687}}^1$

素因数の和:4294699

約数の個数: 24

約数和(自身を含む): 721507584

約数和(自身を除く): 463826364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 4294687, 8589374, 12884061, 17178748, 21473435, 25768122, 42946870, 51536244, 64420305, 85893740, 128840610, 257681220]

約数ペア:

[(1, 257681220), (2, 128840610), (3, 85893740), (4, 64420305), (5, 51536244), (6, 42946870), (10, 25768122), (12, 21473435), (15, 17178748), (20, 12884061), (30, 8589374), (60, 4294687)]