20522960

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6257}}^1$

素因数の和:6311

約数の個数: 40

約数和(自身を含む): 48887496

約数和(自身を除く): 28364536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6257, 12514, 25028, 31285, 50056, 62570, 100112, 125140, 250280, 256537, 500560, 513074, 1026148, 1282685, 2052296, 2565370, 4104592, 5130740, 10261480, 20522960]

約数ペア:

[(1, 20522960), (2, 10261480), (4, 5130740), (5, 4104592), (8, 2565370), (10, 2052296), (16, 1282685), (20, 1026148), (40, 513074), (41, 500560), (80, 256537), (82, 250280), (164, 125140), (205, 100112), (328, 62570), (410, 50056), (656, 31285), (820, 25028), (1640, 12514), (3280, 6257)]