256540872

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{227}}^1$

素因数の和:312

約数の個数: 144

約数和(自身を含む): 774301680

約数和(自身を除く): 517760808

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 49, 56, 62, 84, 93, 98, 124, 147, 168, 186, 196, 217, 227, 248, 294, 372, 392, 434, 454, 588, 651, 681, 744, 868, 908, 961, 1176, 1302, 1362, 1519, 1589, 1736, 1816, 1922, 2604, 2724, 2883, 3038, 3178, 3844, 4557, 4767, 5208, 5448, 5766, 6076, 6356, 6727, 7037, 7688, 9114, 9534, 11123, 11532, 12152, 12712, 13454, 14074, 18228, 19068, 20181, 21111, 22246, 23064, 26908, 28148, 33369, 36456, 38136, 40362, 42222, 44492, 47089, 49259, 53816, 56296, 66738, 80724, 84444, 88984, 94178, 98518, 133476, 141267, 147777, 161448, 168888, 188356, 197036, 218147, 266952, 282534, 295554, 344813, 376712, 394072, 436294, 565068, 591108, 654441, 689626, 872588, 1034439, 1130136, 1182216, 1308882, 1379252, 1527029, 1745176, 2068878, 2617764, 2758504, 3054058, 4137756, 4581087, 5235528, 6108116, 8275512, 9162174, 10689203, 12216232, 18324348, 21378406, 32067609, 36648696, 42756812, 64135218, 85513624, 128270436, 256540872]

約数ペア:

[(1, 256540872), (2, 128270436), (3, 85513624), (4, 64135218), (6, 42756812), (7, 36648696), (8, 32067609), (12, 21378406), (14, 18324348), (21, 12216232), (24, 10689203), (28, 9162174), (31, 8275512), (42, 6108116), (49, 5235528), (56, 4581087), (62, 4137756), (84, 3054058), (93, 2758504), (98, 2617764), (124, 2068878), (147, 1745176), (168, 1527029), (186, 1379252), (196, 1308882), (217, 1182216), (227, 1130136), (248, 1034439), (294, 872588), (372, 689626), (392, 654441), (434, 591108), (454, 565068), (588, 436294), (651, 394072), (681, 376712), (744, 344813), (868, 295554), (908, 282534), (961, 266952), (1176, 218147), (1302, 197036), (1362, 188356), (1519, 168888), (1589, 161448), (1736, 147777), (1816, 141267), (1922, 133476), (2604, 98518), (2724, 94178), (2883, 88984), (3038, 84444), (3178, 80724), (3844, 66738), (4557, 56296), (4767, 53816), (5208, 49259), (5448, 47089), (5766, 44492), (6076, 42222), (6356, 40362), (6727, 38136), (7037, 36456), (7688, 33369), (9114, 28148), (9534, 26908), (11123, 23064), (11532, 22246), (12152, 21111), (12712, 20181), (13454, 19068), (14074, 18228)]