20919795

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1511}}^1$

素因数の和:1603

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 15658509

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1511, 2769, 4533, 4615, 7555, 13845, 19643, 22665, 58929, 98215, 107281, 294645, 321843, 536405, 1394653, 1609215, 4183959, 6973265, 20919795]

約数ペア:

[(1, 20919795), (3, 6973265), (5, 4183959), (13, 1609215), (15, 1394653), (39, 536405), (65, 321843), (71, 294645), (195, 107281), (213, 98215), (355, 58929), (923, 22665), (1065, 19643), (1511, 13845), (2769, 7555), (4533, 4615)]