20007143560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8199649}}^1$

素因数の和:8199721

約数の個数: 32

約数和(自身を含む): 45754047000

約数和(自身を除く): 25746903440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8199649, 16399298, 32798596, 40998245, 65597192, 81996490, 163992980, 327985960, 500178589, 1000357178, 2000714356, 2500892945, 4001428712, 5001785890, 10003571780, 20007143560]

約数ペア:

[(1, 20007143560), (2, 10003571780), (4, 5001785890), (5, 4001428712), (8, 2500892945), (10, 2000714356), (20, 1000357178), (40, 500178589), (61, 327985960), (122, 163992980), (244, 81996490), (305, 65597192), (488, 40998245), (610, 32798596), (1220, 16399298), (2440, 8199649)]