21787010

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{547}}^1\times {\mathrm{569}}^1$

素因数の和:1130

約数の個数: 32

約数和(自身を含む): 44979840

約数和(自身を除く): 23192830

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 547, 569, 1094, 1138, 2735, 2845, 3829, 3983, 5470, 5690, 7658, 7966, 19145, 19915, 38290, 39830, 311243, 622486, 1556215, 2178701, 3112430, 4357402, 10893505, 21787010]

約数ペア:

[(1, 21787010), (2, 10893505), (5, 4357402), (7, 3112430), (10, 2178701), (14, 1556215), (35, 622486), (70, 311243), (547, 39830), (569, 38290), (1094, 19915), (1138, 19145), (2735, 7966), (2845, 7658), (3829, 5690), (3983, 5470)]