21395270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5309}}^1$

素因数の和:5360

約数の個数: 32

約数和(自身を含む): 42819840

約数和(自身を除く): 21424570

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5309, 10618, 26545, 53090, 69017, 138034, 164579, 329158, 345085, 690170, 822895, 1645790, 2139527, 4279054, 10697635, 21395270]

約数ペア:

[(1, 21395270), (2, 10697635), (5, 4279054), (10, 2139527), (13, 1645790), (26, 822895), (31, 690170), (62, 345085), (65, 329158), (130, 164579), (155, 138034), (310, 69017), (403, 53090), (806, 26545), (2015, 10618), (4030, 5309)]