21916460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1303}}^1$

素因数の和:1370

約数の個数: 36

約数和(自身を含む): 47702928

約数和(自身を除く): 25786468

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1303, 1682, 2606, 3364, 4205, 5212, 6515, 8410, 13030, 16820, 26060, 37787, 75574, 151148, 188935, 377870, 755740, 1095823, 2191646, 4383292, 5479115, 10958230, 21916460]

約数ペア:

[(1, 21916460), (2, 10958230), (4, 5479115), (5, 4383292), (10, 2191646), (20, 1095823), (29, 755740), (58, 377870), (116, 188935), (145, 151148), (290, 75574), (580, 37787), (841, 26060), (1303, 16820), (1682, 13030), (2606, 8410), (3364, 6515), (4205, 5212)]