21688905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3083}}^1$

素因数の和:3165

約数の個数: 32

約数和(自身を含む): 40264704

約数和(自身を除く): 18575799

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 3083, 7035, 9249, 15415, 21581, 46245, 64743, 107905, 206561, 323715, 619683, 1032805, 1445927, 3098415, 4337781, 7229635, 21688905]

約数ペア:

[(1, 21688905), (3, 7229635), (5, 4337781), (7, 3098415), (15, 1445927), (21, 1032805), (35, 619683), (67, 323715), (105, 206561), (201, 107905), (335, 64743), (469, 46245), (1005, 21581), (1407, 15415), (2345, 9249), (3083, 7035)]