20891884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{383}}^1\times {\mathrm{1049}}^1$

素因数の和:1449

約数の個数: 24

約数和(自身を含む): 39513600

約数和(自身を除く): 18621716

約数列:

[1, 2, 4, 13, 26, 52, 383, 766, 1049, 1532, 2098, 4196, 4979, 9958, 13637, 19916, 27274, 54548, 401767, 803534, 1607068, 5222971, 10445942, 20891884]

約数ペア:

[(1, 20891884), (2, 10445942), (4, 5222971), (13, 1607068), (26, 803534), (52, 401767), (383, 54548), (766, 27274), (1049, 19916), (1532, 13637), (2098, 9958), (4196, 4979)]