21013612

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:1041

約数の個数: 24

約数和(自身を含む): 37784880

約数和(自身を除く): 16771268

約数列:

[1, 2, 4, 67, 89, 134, 178, 268, 356, 881, 1762, 3524, 5963, 11926, 23852, 59027, 78409, 118054, 156818, 236108, 313636, 5253403, 10506806, 21013612]

約数ペア:

[(1, 21013612), (2, 10506806), (4, 5253403), (67, 313636), (89, 236108), (134, 156818), (178, 118054), (268, 78409), (356, 59027), (881, 23852), (1762, 11926), (3524, 5963)]