18784990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2657}}^1$

素因数の和:2772

約数の個数: 32

約数和(自身を含む): 39040704

約数和(自身を除く): 20255714

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 101, 202, 505, 707, 1010, 1414, 2657, 3535, 5314, 7070, 13285, 18599, 26570, 37198, 92995, 185990, 268357, 536714, 1341785, 1878499, 2683570, 3756998, 9392495, 18784990]

約数ペア:

[(1, 18784990), (2, 9392495), (5, 3756998), (7, 2683570), (10, 1878499), (14, 1341785), (35, 536714), (70, 268357), (101, 185990), (202, 92995), (505, 37198), (707, 26570), (1010, 18599), (1414, 13285), (2657, 7070), (3535, 5314)]