20507780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60317}}^1$

素因数の和:60343

約数の個数: 24

約数和(自身を含む): 45600408

約数和(自身を除く): 25092628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60317, 120634, 241268, 301585, 603170, 1025389, 1206340, 2050778, 4101556, 5126945, 10253890, 20507780]

約数ペア:

[(1, 20507780), (2, 10253890), (4, 5126945), (5, 4101556), (10, 2050778), (17, 1206340), (20, 1025389), (34, 603170), (68, 301585), (85, 241268), (170, 120634), (340, 60317)]