638204225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 860288688

約数和(自身を除く): 222084463

約数列:

[1, 5, 17, 25, 85, 97, 113, 137, 425, 485, 565, 685, 1649, 1921, 2329, 2425, 2825, 3425, 8245, 9605, 10961, 11645, 13289, 15481, 41225, 48025, 54805, 58225, 66445, 77405, 186337, 225913, 263177, 274025, 332225, 387025, 931685, 1129565, 1315885, 1501657, 4658425, 5647825, 6579425, 7508285, 25528169, 37541425, 127640845, 638204225]

約数ペア:

[(1, 638204225), (5, 127640845), (17, 37541425), (25, 25528169), (85, 7508285), (97, 6579425), (113, 5647825), (137, 4658425), (425, 1501657), (485, 1315885), (565, 1129565), (685, 931685), (1649, 387025), (1921, 332225), (2329, 274025), (2425, 263177), (2825, 225913), (3425, 186337), (8245, 77405), (9605, 66445), (10961, 58225), (11645, 54805), (13289, 48025), (15481, 41225)]