20361380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1103}}^1$

素因数の和:1196

約数の個数: 48

約数和(自身を含む): 46738944

約数和(自身を除く): 26377564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1103, 1420, 1846, 2206, 3692, 4412, 4615, 5515, 9230, 11030, 14339, 18460, 22060, 28678, 57356, 71695, 78313, 143390, 156626, 286780, 313252, 391565, 783130, 1018069, 1566260, 2036138, 4072276, 5090345, 10180690, 20361380]

約数ペア:

[(1, 20361380), (2, 10180690), (4, 5090345), (5, 4072276), (10, 2036138), (13, 1566260), (20, 1018069), (26, 783130), (52, 391565), (65, 313252), (71, 286780), (130, 156626), (142, 143390), (260, 78313), (284, 71695), (355, 57356), (710, 28678), (923, 22060), (1103, 18460), (1420, 14339), (1846, 11030), (2206, 9230), (3692, 5515), (4412, 4615)]