20336540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5009}}^1$

素因数の和:5054

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 30164260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5009, 10018, 20036, 25045, 35063, 50090, 70126, 100180, 140252, 145261, 175315, 290522, 350630, 581044, 701260, 726305, 1016827, 1452610, 2033654, 2905220, 4067308, 5084135, 10168270, 20336540]

約数ペア:

[(1, 20336540), (2, 10168270), (4, 5084135), (5, 4067308), (7, 2905220), (10, 2033654), (14, 1452610), (20, 1016827), (28, 726305), (29, 701260), (35, 581044), (58, 350630), (70, 290522), (116, 175315), (140, 145261), (145, 140252), (203, 100180), (290, 70126), (406, 50090), (580, 35063), (812, 25045), (1015, 20036), (2030, 10018), (4060, 5009)]