20103915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:939

約数の個数: 32

約数和(自身を含む): 34949376

約数和(自身を除く): 14845461

約数列:

[1, 3, 5, 13, 15, 39, 65, 131, 195, 393, 655, 787, 1703, 1965, 2361, 3935, 5109, 8515, 10231, 11805, 25545, 30693, 51155, 103097, 153465, 309291, 515485, 1340261, 1546455, 4020783, 6701305, 20103915]

約数ペア:

[(1, 20103915), (3, 6701305), (5, 4020783), (13, 1546455), (15, 1340261), (39, 515485), (65, 309291), (131, 153465), (195, 103097), (393, 51155), (655, 30693), (787, 25545), (1703, 11805), (1965, 10231), (2361, 8515), (3935, 5109)]