20921616

素因数分解:

$2^4\times 3^2\times {\mathrm{145289}}^1$

素因数の和:145303

約数の個数: 30

約数和(自身を含む): 58551870

約数和(自身を除く): 37630254

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 145289, 290578, 435867, 581156, 871734, 1162312, 1307601, 1743468, 2324624, 2615202, 3486936, 5230404, 6973872, 10460808, 20921616]

約数ペア:

[(1, 20921616), (2, 10460808), (3, 6973872), (4, 5230404), (6, 3486936), (8, 2615202), (9, 2324624), (12, 1743468), (16, 1307601), (18, 1162312), (24, 871734), (36, 581156), (48, 435867), (72, 290578), (144, 145289)]