20997804972

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{337607}}^1$

素因数の和:337758

約数の個数: 48

約数和(自身を含む): 50365711872

約数和(自身を除く): 29367906900

約数列:

[1, 2, 3, 4, 6, 12, 71, 73, 142, 146, 213, 219, 284, 292, 426, 438, 852, 876, 5183, 10366, 15549, 20732, 31098, 62196, 337607, 675214, 1012821, 1350428, 2025642, 4051284, 23970097, 24645311, 47940194, 49290622, 71910291, 73935933, 95880388, 98581244, 143820582, 147871866, 287641164, 295743732, 1749817081, 3499634162, 5249451243, 6999268324, 10498902486, 20997804972]

約数ペア:

[(1, 20997804972), (2, 10498902486), (3, 6999268324), (4, 5249451243), (6, 3499634162), (12, 1749817081), (71, 295743732), (73, 287641164), (142, 147871866), (146, 143820582), (213, 98581244), (219, 95880388), (284, 73935933), (292, 71910291), (426, 49290622), (438, 47940194), (852, 24645311), (876, 23970097), (5183, 4051284), (10366, 2025642), (15549, 1350428), (20732, 1012821), (31098, 675214), (62196, 337607)]