21274715

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{55259}}^1$

素因数の和:55282

約数の個数: 16

約数和(自身を含む): 31829760

約数和(自身を除く): 10555045

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 55259, 276295, 386813, 607849, 1934065, 3039245, 4254943, 21274715]

約数ペア:

[(1, 21274715), (5, 4254943), (7, 3039245), (11, 1934065), (35, 607849), (55, 386813), (77, 276295), (385, 55259)]