20405808

素因数分解:

$2^4\times 3^2\times {\mathrm{141707}}^1$

素因数の和:141721

約数の個数: 30

約数和(自身を含む): 57108324

約数和(自身を除く): 36702516

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 141707, 283414, 425121, 566828, 850242, 1133656, 1275363, 1700484, 2267312, 2550726, 3400968, 5101452, 6801936, 10202904, 20405808]

約数ペア:

[(1, 20405808), (2, 10202904), (3, 6801936), (4, 5101452), (6, 3400968), (8, 2550726), (9, 2267312), (12, 1700484), (16, 1275363), (18, 1133656), (24, 850242), (36, 566828), (48, 425121), (72, 283414), (144, 141707)]