21356872

素因数分解:

$2^3\times {\mathrm{659}}^1\times {\mathrm{4051}}^1$

素因数の和:4716

約数の個数: 16

約数和(自身を含む): 40114800

約数和(自身を除く): 18757928

約数列:

[1, 2, 4, 8, 659, 1318, 2636, 4051, 5272, 8102, 16204, 32408, 2669609, 5339218, 10678436, 21356872]

約数ペア:

[(1, 21356872), (2, 10678436), (4, 5339218), (8, 2669609), (659, 32408), (1318, 16204), (2636, 8102), (4051, 5272)]