77221225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 109010880

約数和(自身を除く): 31789655

約数列:

[1, 5, 17, 19, 25, 73, 85, 95, 131, 323, 365, 425, 475, 655, 1241, 1387, 1615, 1825, 2227, 2489, 3275, 6205, 6935, 8075, 9563, 11135, 12445, 23579, 31025, 34675, 42313, 47815, 55675, 62225, 117895, 162571, 181697, 211565, 239075, 589475, 812855, 908485, 1057825, 3088849, 4064275, 4542425, 15444245, 77221225]

約数ペア:

[(1, 77221225), (5, 15444245), (17, 4542425), (19, 4064275), (25, 3088849), (73, 1057825), (85, 908485), (95, 812855), (131, 589475), (323, 239075), (365, 211565), (425, 181697), (475, 162571), (655, 117895), (1241, 62225), (1387, 55675), (1615, 47815), (1825, 42313), (2227, 34675), (2489, 31025), (3275, 23579), (6205, 12445), (6935, 11135), (8075, 9563)]