281855015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 372556800

約数和(自身を除く): 90701785

約数列:

[1, 5, 13, 65, 79, 131, 395, 419, 655, 1027, 1703, 2095, 5135, 5447, 8515, 10349, 27235, 33101, 51745, 54889, 134537, 165505, 274445, 430313, 672685, 713557, 2151565, 3567785, 4336231, 21681155, 56371003, 281855015]

約数ペア:

[(1, 281855015), (5, 56371003), (13, 21681155), (65, 4336231), (79, 3567785), (131, 2151565), (395, 713557), (419, 672685), (655, 430313), (1027, 274445), (1703, 165505), (2095, 134537), (5135, 54889), (5447, 51745), (8515, 33101), (10349, 27235)]