256891140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5641}}^1$

素因数の和:5690

約数の個数: 144

約数和(自身を含む): 887193216

約数和(自身を除く): 630302076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 23, 30, 33, 36, 44, 45, 46, 55, 60, 66, 69, 90, 92, 99, 110, 115, 132, 138, 165, 180, 198, 207, 220, 230, 253, 276, 330, 345, 396, 414, 460, 495, 506, 660, 690, 759, 828, 990, 1012, 1035, 1265, 1380, 1518, 1980, 2070, 2277, 2530, 3036, 3795, 4140, 4554, 5060, 5641, 7590, 9108, 11282, 11385, 15180, 16923, 22564, 22770, 28205, 33846, 45540, 50769, 56410, 62051, 67692, 84615, 101538, 112820, 124102, 129743, 169230, 186153, 203076, 248204, 253845, 259486, 310255, 338460, 372306, 389229, 507690, 518972, 558459, 620510, 648715, 744612, 778458, 930765, 1015380, 1116918, 1167687, 1241020, 1297430, 1427173, 1556916, 1861530, 1946145, 2233836, 2335374, 2594860, 2792295, 2854346, 3723060, 3892290, 4281519, 4670748, 5584590, 5708692, 5838435, 7135865, 7784580, 8563038, 11169180, 11676870, 12844557, 14271730, 17126076, 21407595, 23353740, 25689114, 28543460, 42815190, 51378228, 64222785, 85630380, 128445570, 256891140]

約数ペア:

[(1, 256891140), (2, 128445570), (3, 85630380), (4, 64222785), (5, 51378228), (6, 42815190), (9, 28543460), (10, 25689114), (11, 23353740), (12, 21407595), (15, 17126076), (18, 14271730), (20, 12844557), (22, 11676870), (23, 11169180), (30, 8563038), (33, 7784580), (36, 7135865), (44, 5838435), (45, 5708692), (46, 5584590), (55, 4670748), (60, 4281519), (66, 3892290), (69, 3723060), (90, 2854346), (92, 2792295), (99, 2594860), (110, 2335374), (115, 2233836), (132, 1946145), (138, 1861530), (165, 1556916), (180, 1427173), (198, 1297430), (207, 1241020), (220, 1167687), (230, 1116918), (253, 1015380), (276, 930765), (330, 778458), (345, 744612), (396, 648715), (414, 620510), (460, 558459), (495, 518972), (506, 507690), (660, 389229), (690, 372306), (759, 338460), (828, 310255), (990, 259486), (1012, 253845), (1035, 248204), (1265, 203076), (1380, 186153), (1518, 169230), (1980, 129743), (2070, 124102), (2277, 112820), (2530, 101538), (3036, 84615), (3795, 67692), (4140, 62051), (4554, 56410), (5060, 50769), (5641, 45540), (7590, 33846), (9108, 28205), (11282, 22770), (11385, 22564), (15180, 16923)]