288935140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1111289}}^1$

素因数の和:1111311

約数の個数: 24

約数和(自身を含む): 653438520

約数和(自身を除く): 364503380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1111289, 2222578, 4445156, 5556445, 11112890, 14446757, 22225780, 28893514, 57787028, 72233785, 144467570, 288935140]

約数ペア:

[(1, 288935140), (2, 144467570), (4, 72233785), (5, 57787028), (10, 28893514), (13, 22225780), (20, 14446757), (26, 11112890), (52, 5556445), (65, 4445156), (130, 2222578), (260, 1111289)]