20989430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{27259}}^1$

素因数の和:27284

約数の個数: 32

約数和(自身を含む): 47105280

約数和(自身を除く): 26115850

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 27259, 54518, 136295, 190813, 272590, 299849, 381626, 599698, 954065, 1499245, 1908130, 2098943, 2998490, 4197886, 10494715, 20989430]

約数ペア:

[(1, 20989430), (2, 10494715), (5, 4197886), (7, 2998490), (10, 2098943), (11, 1908130), (14, 1499245), (22, 954065), (35, 599698), (55, 381626), (70, 299849), (77, 272590), (110, 190813), (154, 136295), (385, 54518), (770, 27259)]