21572745

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2729}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 16166775

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 2729, 7905, 8187, 13645, 40935, 46393, 84599, 139179, 231965, 253797, 422995, 695895, 1268985, 1438183, 4314549, 7190915, 21572745]

約数ペア:

[(1, 21572745), (3, 7190915), (5, 4314549), (15, 1438183), (17, 1268985), (31, 695895), (51, 422995), (85, 253797), (93, 231965), (155, 139179), (255, 84599), (465, 46393), (527, 40935), (1581, 13645), (2635, 8187), (2729, 7905)]