64840465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 86430240

約数和(自身を除く): 21589775

約数列:

[1, 5, 17, 37, 53, 85, 185, 265, 389, 629, 901, 1945, 1961, 3145, 4505, 6613, 9805, 14393, 20617, 33065, 33337, 71965, 103085, 166685, 244681, 350489, 762829, 1223405, 1752445, 3814145, 12968093, 64840465]

約数ペア:

[(1, 64840465), (5, 12968093), (17, 3814145), (37, 1752445), (53, 1223405), (85, 762829), (185, 350489), (265, 244681), (389, 166685), (629, 103085), (901, 71965), (1945, 33337), (1961, 33065), (3145, 20617), (4505, 14393), (6613, 9805)]