201619745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{311}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 266872320

約数和(自身を除く): 65252575

約数列:

[1, 5, 17, 29, 85, 145, 263, 311, 493, 1315, 1555, 2465, 4471, 5287, 7627, 9019, 22355, 26435, 38135, 45095, 81793, 129659, 153323, 408965, 648295, 766615, 1390481, 2371997, 6952405, 11859985, 40323949, 201619745]

約数ペア:

[(1, 201619745), (5, 40323949), (17, 11859985), (29, 6952405), (85, 2371997), (145, 1390481), (263, 766615), (311, 648295), (493, 408965), (1315, 153323), (1555, 129659), (2465, 81793), (4471, 45095), (5287, 38135), (7627, 26435), (9019, 22355)]