20123735180

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{661}}^1\times {\mathrm{7727}}^1$

素因数の和:8594

約数の個数: 48

約数和(自身を含む): 42544123776

約数和(自身を除く): 22420388596

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 661, 788, 985, 1322, 1970, 2644, 3305, 3940, 6610, 7727, 13220, 15454, 30908, 38635, 77270, 130217, 154540, 260434, 520868, 651085, 1302170, 1522219, 2604340, 3044438, 5107547, 6088876, 7611095, 10215094, 15222190, 20430188, 25537735, 30444380, 51075470, 102150940, 1006186759, 2012373518, 4024747036, 5030933795, 10061867590, 20123735180]

約数ペア:

[(1, 20123735180), (2, 10061867590), (4, 5030933795), (5, 4024747036), (10, 2012373518), (20, 1006186759), (197, 102150940), (394, 51075470), (661, 30444380), (788, 25537735), (985, 20430188), (1322, 15222190), (1970, 10215094), (2644, 7611095), (3305, 6088876), (3940, 5107547), (6610, 3044438), (7727, 2604340), (13220, 1522219), (15454, 1302170), (30908, 651085), (38635, 520868), (77270, 260434), (130217, 154540)]