256321764

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^3\times {\mathrm{239}}^1$

素因数の和:342

約数の個数: 72

約数和(自身を含む): 672322560

約数和(自身を除く): 416000796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 186, 239, 279, 372, 478, 558, 717, 956, 961, 1116, 1434, 1922, 2151, 2868, 2883, 3844, 4302, 5766, 7409, 8604, 8649, 11532, 14818, 17298, 22227, 29636, 29791, 34596, 44454, 59582, 66681, 88908, 89373, 119164, 133362, 178746, 229679, 266724, 268119, 357492, 459358, 536238, 689037, 918716, 1072476, 1378074, 2067111, 2756148, 4134222, 7120049, 8268444, 14240098, 21360147, 28480196, 42720294, 64080441, 85440588, 128160882, 256321764]

約数ペア:

[(1, 256321764), (2, 128160882), (3, 85440588), (4, 64080441), (6, 42720294), (9, 28480196), (12, 21360147), (18, 14240098), (31, 8268444), (36, 7120049), (62, 4134222), (93, 2756148), (124, 2067111), (186, 1378074), (239, 1072476), (279, 918716), (372, 689037), (478, 536238), (558, 459358), (717, 357492), (956, 268119), (961, 266724), (1116, 229679), (1434, 178746), (1922, 133362), (2151, 119164), (2868, 89373), (2883, 88908), (3844, 66681), (4302, 59582), (5766, 44454), (7409, 34596), (8604, 29791), (8649, 29636), (11532, 22227), (14818, 17298)]