256476820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{2689}}^1$

素因数の和:2968

約数の個数: 48

約数和(自身を含む): 569419200

約数和(自身を除く): 312942380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 251, 380, 502, 1004, 1255, 2510, 2689, 4769, 5020, 5378, 9538, 10756, 13445, 19076, 23845, 26890, 47690, 51091, 53780, 95380, 102182, 204364, 255455, 510910, 674939, 1021820, 1349878, 2699756, 3374695, 6749390, 12823841, 13498780, 25647682, 51295364, 64119205, 128238410, 256476820]

約数ペア:

[(1, 256476820), (2, 128238410), (4, 64119205), (5, 51295364), (10, 25647682), (19, 13498780), (20, 12823841), (38, 6749390), (76, 3374695), (95, 2699756), (190, 1349878), (251, 1021820), (380, 674939), (502, 510910), (1004, 255455), (1255, 204364), (2510, 102182), (2689, 95380), (4769, 53780), (5020, 51091), (5378, 47690), (9538, 26890), (10756, 23845), (13445, 19076)]