257969010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{661459}}^1$

素因数の和:661482

約数の個数: 32

約数和(自身を含む): 666751680

約数和(自身を除く): 408782670

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 661459, 1322918, 1984377, 3307295, 3968754, 6614590, 8598967, 9921885, 17197934, 19843770, 25796901, 42994835, 51593802, 85989670, 128984505, 257969010]

約数ペア:

[(1, 257969010), (2, 128984505), (3, 85989670), (5, 51593802), (6, 42994835), (10, 25796901), (13, 19843770), (15, 17197934), (26, 9921885), (30, 8598967), (39, 6614590), (65, 3968754), (78, 3307295), (130, 1984377), (195, 1322918), (390, 661459)]