18077990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2557}}^1$

素因数の和:2672

約数の個数: 32

約数和(自身を含む): 37571904

約数和(自身を除く): 19493914

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 101, 202, 505, 707, 1010, 1414, 2557, 3535, 5114, 7070, 12785, 17899, 25570, 35798, 89495, 178990, 258257, 516514, 1291285, 1807799, 2582570, 3615598, 9038995, 18077990]

約数ペア:

[(1, 18077990), (2, 9038995), (5, 3615598), (7, 2582570), (10, 1807799), (14, 1291285), (35, 516514), (70, 258257), (101, 178990), (202, 89495), (505, 35798), (707, 25570), (1010, 17899), (1414, 12785), (2557, 7070), (3535, 5114)]