261236690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:216

約数の個数: 128

約数和(自身を含む): 585252864

約数和(自身を除く): 324016174

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 71, 83, 110, 130, 142, 143, 155, 166, 286, 310, 341, 355, 403, 415, 682, 710, 715, 781, 806, 830, 913, 923, 1079, 1430, 1562, 1705, 1826, 1846, 2015, 2158, 2201, 2573, 3410, 3905, 4030, 4402, 4433, 4565, 4615, 5146, 5395, 5893, 7810, 8866, 9130, 9230, 10153, 10790, 11005, 11786, 11869, 12865, 20306, 22010, 22165, 23738, 24211, 25730, 28303, 28613, 29465, 33449, 44330, 48422, 50765, 56606, 57226, 58930, 59345, 64823, 66898, 76609, 101530, 118690, 121055, 129646, 141515, 143065, 153218, 167245, 182683, 242110, 283030, 286130, 314743, 324115, 334490, 365366, 367939, 383045, 629486, 648230, 735878, 766090, 842699, 913415, 1573715, 1685398, 1826830, 1839695, 2009513, 2374879, 3147430, 3679390, 4019026, 4213495, 4749758, 8426990, 10047565, 11874395, 20095130, 23748790, 26123669, 52247338, 130618345, 261236690]

約数ペア:

[(1, 261236690), (2, 130618345), (5, 52247338), (10, 26123669), (11, 23748790), (13, 20095130), (22, 11874395), (26, 10047565), (31, 8426990), (55, 4749758), (62, 4213495), (65, 4019026), (71, 3679390), (83, 3147430), (110, 2374879), (130, 2009513), (142, 1839695), (143, 1826830), (155, 1685398), (166, 1573715), (286, 913415), (310, 842699), (341, 766090), (355, 735878), (403, 648230), (415, 629486), (682, 383045), (710, 367939), (715, 365366), (781, 334490), (806, 324115), (830, 314743), (913, 286130), (923, 283030), (1079, 242110), (1430, 182683), (1562, 167245), (1705, 153218), (1826, 143065), (1846, 141515), (2015, 129646), (2158, 121055), (2201, 118690), (2573, 101530), (3410, 76609), (3905, 66898), (4030, 64823), (4402, 59345), (4433, 58930), (4565, 57226), (4615, 56606), (5146, 50765), (5395, 48422), (5893, 44330), (7810, 33449), (8866, 29465), (9130, 28613), (9230, 28303), (10153, 25730), (10790, 24211), (11005, 23738), (11786, 22165), (11869, 22010), (12865, 20306)]