21318055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1171}}^1$

素因数の和:1518

約数の個数: 16

約数和(自身を含む): 28015488

約数和(自身を除く): 6697433

約数列:

[1, 5, 11, 55, 331, 1171, 1655, 3641, 5855, 12881, 18205, 64405, 387601, 1938005, 4263611, 21318055]

約数ペア:

[(1, 21318055), (5, 4263611), (11, 1938005), (55, 387601), (331, 64405), (1171, 18205), (1655, 12881), (3641, 5855)]