21078870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{10487}}^1$

素因数の和:10564

約数の個数: 32

約数和(自身を含む): 51349248

約数和(自身を除く): 30270378

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 67, 134, 201, 335, 402, 670, 1005, 2010, 10487, 20974, 31461, 52435, 62922, 104870, 157305, 314610, 702629, 1405258, 2107887, 3513145, 4215774, 7026290, 10539435, 21078870]

約数ペア:

[(1, 21078870), (2, 10539435), (3, 7026290), (5, 4215774), (6, 3513145), (10, 2107887), (15, 1405258), (30, 702629), (67, 314610), (134, 157305), (201, 104870), (335, 62922), (402, 52435), (670, 31461), (1005, 20974), (2010, 10487)]