21301758

素因数分解:

$2^1\times 3^3\times {\mathrm{421}}^1\times {\mathrm{937}}^1$

素因数の和:1369

約数の個数: 32

約数和(自身を含む): 47500320

約数和(自身を除く): 26198562

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 421, 842, 937, 1263, 1874, 2526, 2811, 3789, 5622, 7578, 8433, 11367, 16866, 22734, 25299, 50598, 394477, 788954, 1183431, 2366862, 3550293, 7100586, 10650879, 21301758]

約数ペア:

[(1, 21301758), (2, 10650879), (3, 7100586), (6, 3550293), (9, 2366862), (18, 1183431), (27, 788954), (54, 394477), (421, 50598), (842, 25299), (937, 22734), (1263, 16866), (1874, 11367), (2526, 8433), (2811, 7578), (3789, 5622)]