20189045540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1\times {\mathrm{25693}}^1$

素因数の和:26192

約数の個数: 48

約数和(自身を含む): 42928507440

約数和(自身を除く): 22739461900

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 389, 404, 505, 778, 1010, 1556, 1945, 2020, 3890, 7780, 25693, 39289, 51386, 78578, 102772, 128465, 157156, 196445, 256930, 392890, 513860, 785780, 2594993, 5189986, 9994577, 10379972, 12974965, 19989154, 25949930, 39978308, 49972885, 51899860, 99945770, 199891540, 1009452277, 2018904554, 4037809108, 5047261385, 10094522770, 20189045540]

約数ペア:

[(1, 20189045540), (2, 10094522770), (4, 5047261385), (5, 4037809108), (10, 2018904554), (20, 1009452277), (101, 199891540), (202, 99945770), (389, 51899860), (404, 49972885), (505, 39978308), (778, 25949930), (1010, 19989154), (1556, 12974965), (1945, 10379972), (2020, 9994577), (3890, 5189986), (7780, 2594993), (25693, 785780), (39289, 513860), (51386, 392890), (78578, 256930), (102772, 196445), (128465, 157156)]