21181238

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:896

約数の個数: 32

約数和(自身を含む): 36741600

約数和(自身を除く): 15560362

約数列:

[1, 2, 13, 19, 26, 38, 53, 106, 247, 494, 689, 809, 1007, 1378, 1618, 2014, 10517, 13091, 15371, 21034, 26182, 30742, 42877, 85754, 199823, 399646, 557401, 814663, 1114802, 1629326, 10590619, 21181238]

約数ペア:

[(1, 21181238), (2, 10590619), (13, 1629326), (19, 1114802), (26, 814663), (38, 557401), (53, 399646), (106, 199823), (247, 85754), (494, 42877), (689, 30742), (809, 26182), (1007, 21034), (1378, 15371), (1618, 13091), (2014, 10517)]