20403820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 44835840

約数和(自身を除く): 24432020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 127, 145, 254, 277, 290, 508, 554, 580, 635, 1108, 1270, 1385, 2540, 2770, 3683, 5540, 7366, 8033, 14732, 16066, 18415, 32132, 35179, 36830, 40165, 70358, 73660, 80330, 140716, 160660, 175895, 351790, 703580, 1020191, 2040382, 4080764, 5100955, 10201910, 20403820]

約数ペア:

[(1, 20403820), (2, 10201910), (4, 5100955), (5, 4080764), (10, 2040382), (20, 1020191), (29, 703580), (58, 351790), (116, 175895), (127, 160660), (145, 140716), (254, 80330), (277, 73660), (290, 70358), (508, 40165), (554, 36830), (580, 35179), (635, 32132), (1108, 18415), (1270, 16066), (1385, 14732), (2540, 8033), (2770, 7366), (3683, 5540)]