217655165

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1481}}^1$

素因数の和:1542

約数の個数: 64

約数和(自身を含む): 358525440

約数和(自身を除く): 140870275

約数列:

[1, 5, 7, 13, 17, 19, 35, 65, 85, 91, 95, 119, 133, 221, 247, 323, 455, 595, 665, 1105, 1235, 1481, 1547, 1615, 1729, 2261, 4199, 7405, 7735, 8645, 10367, 11305, 19253, 20995, 25177, 28139, 29393, 51835, 96265, 125885, 134771, 140695, 146965, 176239, 196973, 327301, 365807, 478363, 673855, 881195, 984865, 1636505, 1829035, 2291107, 2391815, 2560649, 3348541, 6218719, 11455535, 12803245, 16742705, 31093595, 43531033, 217655165]

約数ペア:

[(1, 217655165), (5, 43531033), (7, 31093595), (13, 16742705), (17, 12803245), (19, 11455535), (35, 6218719), (65, 3348541), (85, 2560649), (91, 2391815), (95, 2291107), (119, 1829035), (133, 1636505), (221, 984865), (247, 881195), (323, 673855), (455, 478363), (595, 365807), (665, 327301), (1105, 196973), (1235, 176239), (1481, 146965), (1547, 140695), (1615, 134771), (1729, 125885), (2261, 96265), (4199, 51835), (7405, 29393), (7735, 28139), (8645, 25177), (10367, 20995), (11305, 19253)]