20109687

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 9888393

約数列:

[1, 3, 13, 39, 61, 79, 107, 183, 237, 321, 793, 1027, 1391, 2379, 3081, 4173, 4819, 6527, 8453, 14457, 19581, 25359, 62647, 84851, 109889, 187941, 254553, 329667, 515633, 1546899, 6703229, 20109687]

約数ペア:

[(1, 20109687), (3, 6703229), (13, 1546899), (39, 515633), (61, 329667), (79, 254553), (107, 187941), (183, 109889), (237, 84851), (321, 62647), (793, 25359), (1027, 19581), (1391, 14457), (2379, 8453), (3081, 6527), (4173, 4819)]