20438985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5261}}^1$

素因数の和:5313

約数の個数: 32

約数和(自身を含む): 38391552

約数和(自身を除く): 17952567

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5261, 15783, 26305, 36827, 78915, 110481, 184135, 194657, 552405, 583971, 973285, 1362599, 2919855, 4087797, 6812995, 20438985]

約数ペア:

[(1, 20438985), (3, 6812995), (5, 4087797), (7, 2919855), (15, 1362599), (21, 973285), (35, 583971), (37, 552405), (105, 194657), (111, 184135), (185, 110481), (259, 78915), (555, 36827), (777, 26305), (1295, 15783), (3885, 5261)]