20210381565

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{780173}}^1$

素因数の和:780349

約数の個数: 32

約数和(自身を含む): 35501037696

約数和(自身を除く): 15290656131

約数列:

[1, 3, 5, 11, 15, 33, 55, 157, 165, 471, 785, 1727, 2355, 5181, 8635, 25905, 780173, 2340519, 3900865, 8581903, 11702595, 25745709, 42909515, 122487161, 128728545, 367461483, 612435805, 1347358771, 1837307415, 4042076313, 6736793855, 20210381565]

約数ペア:

[(1, 20210381565), (3, 6736793855), (5, 4042076313), (11, 1837307415), (15, 1347358771), (33, 612435805), (55, 367461483), (157, 128728545), (165, 122487161), (471, 42909515), (785, 25745709), (1727, 11702595), (2355, 8581903), (5181, 3900865), (8635, 2340519), (25905, 780173)]