20284719

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1109}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 33815040

約数和(自身を除く): 13530321

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 201, 273, 469, 871, 1109, 1407, 2613, 3327, 6097, 7763, 14417, 18291, 23289, 43251, 74303, 100919, 222909, 302757, 520121, 965939, 1560363, 2897817, 6761573, 20284719]

約数ペア:

[(1, 20284719), (3, 6761573), (7, 2897817), (13, 1560363), (21, 965939), (39, 520121), (67, 302757), (91, 222909), (201, 100919), (273, 74303), (469, 43251), (871, 23289), (1109, 18291), (1407, 14417), (2613, 7763), (3327, 6097)]