78172885

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{137}}^2$

素因数の和:310

約数の個数: 36

約数和(自身を含む): 116391492

約数和(自身を除く): 38218607

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 137, 245, 595, 685, 833, 959, 2329, 4165, 4795, 6713, 11645, 16303, 18769, 33565, 81515, 93845, 114121, 131383, 319073, 570605, 656915, 919681, 1595365, 2233511, 4598405, 11167555, 15634577, 78172885]

約数ペア:

[(1, 78172885), (5, 15634577), (7, 11167555), (17, 4598405), (35, 2233511), (49, 1595365), (85, 919681), (119, 656915), (137, 570605), (245, 319073), (595, 131383), (685, 114121), (833, 93845), (959, 81515), (2329, 33565), (4165, 18769), (4795, 16303), (6713, 11645)]