21907980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121711}}^1$

素因数の和:121726

約数の個数: 36

約数和(自身を含む): 66454752

約数和(自身を除く): 44546772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121711, 243422, 365133, 486844, 608555, 730266, 1095399, 1217110, 1460532, 1825665, 2190798, 2434220, 3651330, 4381596, 5476995, 7302660, 10953990, 21907980]

約数ペア:

[(1, 21907980), (2, 10953990), (3, 7302660), (4, 5476995), (5, 4381596), (6, 3651330), (9, 2434220), (10, 2190798), (12, 1825665), (15, 1460532), (18, 1217110), (20, 1095399), (30, 730266), (36, 608555), (45, 486844), (60, 365133), (90, 243422), (180, 121711)]