205988405

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 323670168

約数和(自身を除く): 117681763

約数列:

[1, 5, 7, 17, 19, 35, 49, 85, 95, 119, 133, 137, 245, 323, 361, 595, 665, 685, 833, 931, 959, 1615, 1805, 2261, 2329, 2527, 2603, 4165, 4655, 4795, 6137, 6713, 11305, 11645, 12635, 13015, 15827, 16303, 17689, 18221, 30685, 33565, 42959, 44251, 49457, 79135, 81515, 88445, 91105, 114121, 127547, 214795, 221255, 247285, 300713, 309757, 346199, 570605, 637735, 840769, 1503565, 1548785, 1730995, 2168299, 2423393, 4203845, 5885383, 10841495, 12116965, 29426915, 41197681, 205988405]

約数ペア:

[(1, 205988405), (5, 41197681), (7, 29426915), (17, 12116965), (19, 10841495), (35, 5885383), (49, 4203845), (85, 2423393), (95, 2168299), (119, 1730995), (133, 1548785), (137, 1503565), (245, 840769), (323, 637735), (361, 570605), (595, 346199), (665, 309757), (685, 300713), (833, 247285), (931, 221255), (959, 214795), (1615, 127547), (1805, 114121), (2261, 91105), (2329, 88445), (2527, 81515), (2603, 79135), (4165, 49457), (4655, 44251), (4795, 42959), (6137, 33565), (6713, 30685), (11305, 18221), (11645, 17689), (12635, 16303), (13015, 15827)]