20215243780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1\times {\mathrm{27961}}^1$

素因数の和:28984

約数の個数: 48

約数和(自身を含む): 43645550256

約数和(自身を除く): 23430306476

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 977, 1954, 3908, 4885, 9770, 19540, 27961, 36149, 55922, 72298, 111844, 139805, 144596, 180745, 279610, 361490, 559220, 722980, 1034557, 2069114, 4138228, 5172785, 10345570, 20691140, 27317897, 54635794, 109271588, 136589485, 273178970, 546357940, 1010762189, 2021524378, 4043048756, 5053810945, 10107621890, 20215243780]

約数ペア:

[(1, 20215243780), (2, 10107621890), (4, 5053810945), (5, 4043048756), (10, 2021524378), (20, 1010762189), (37, 546357940), (74, 273178970), (148, 136589485), (185, 109271588), (370, 54635794), (740, 27317897), (977, 20691140), (1954, 10345570), (3908, 5172785), (4885, 4138228), (9770, 2069114), (19540, 1034557), (27961, 722980), (36149, 559220), (55922, 361490), (72298, 279610), (111844, 180745), (139805, 144596)]