642880075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 868765824

約数和(自身を除く): 225885749

約数列:

[1, 5, 17, 25, 67, 85, 107, 211, 335, 425, 535, 1055, 1139, 1675, 1819, 2675, 3587, 5275, 5695, 7169, 9095, 14137, 17935, 22577, 28475, 35845, 45475, 70685, 89675, 112885, 121873, 179225, 240329, 353425, 383809, 564425, 609365, 1201645, 1512659, 1919045, 3046825, 6008225, 7563295, 9595225, 25715203, 37816475, 128576015, 642880075]

約数ペア:

[(1, 642880075), (5, 128576015), (17, 37816475), (25, 25715203), (67, 9595225), (85, 7563295), (107, 6008225), (211, 3046825), (335, 1919045), (425, 1512659), (535, 1201645), (1055, 609365), (1139, 564425), (1675, 383809), (1819, 353425), (2675, 240329), (3587, 179225), (5275, 121873), (5695, 112885), (7169, 89675), (9095, 70685), (14137, 45475), (17935, 35845), (22577, 28475)]