256780160

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4409}}^1$

素因数の和:4448

約数の個数: 128

約数和(自身を含む): 755697600

約数和(自身を除く): 498917440

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 896, 910, 1040, 1120, 1456, 1664, 1820, 2080, 2240, 2912, 3640, 4160, 4409, 4480, 5824, 7280, 8320, 8818, 11648, 14560, 17636, 22045, 29120, 30863, 35272, 44090, 57317, 58240, 61726, 70544, 88180, 114634, 123452, 141088, 154315, 176360, 229268, 246904, 282176, 286585, 308630, 352720, 401219, 458536, 493808, 564352, 573170, 617260, 705440, 802438, 917072, 987616, 1146340, 1234520, 1410880, 1604876, 1834144, 1975232, 2006095, 2292680, 2469040, 2821760, 3209752, 3668288, 3950464, 4012190, 4585360, 4938080, 6419504, 7336576, 8024380, 9170720, 9876160, 12839008, 16048760, 18341440, 19752320, 25678016, 32097520, 36682880, 51356032, 64195040, 128390080, 256780160]

約数ペア:

[(1, 256780160), (2, 128390080), (4, 64195040), (5, 51356032), (7, 36682880), (8, 32097520), (10, 25678016), (13, 19752320), (14, 18341440), (16, 16048760), (20, 12839008), (26, 9876160), (28, 9170720), (32, 8024380), (35, 7336576), (40, 6419504), (52, 4938080), (56, 4585360), (64, 4012190), (65, 3950464), (70, 3668288), (80, 3209752), (91, 2821760), (104, 2469040), (112, 2292680), (128, 2006095), (130, 1975232), (140, 1834144), (160, 1604876), (182, 1410880), (208, 1234520), (224, 1146340), (260, 987616), (280, 917072), (320, 802438), (364, 705440), (416, 617260), (448, 573170), (455, 564352), (520, 493808), (560, 458536), (640, 401219), (728, 352720), (832, 308630), (896, 286585), (910, 282176), (1040, 246904), (1120, 229268), (1456, 176360), (1664, 154315), (1820, 141088), (2080, 123452), (2240, 114634), (2912, 88180), (3640, 70544), (4160, 61726), (4409, 58240), (4480, 57317), (5824, 44090), (7280, 35272), (8320, 30863), (8818, 29120), (11648, 22045), (14560, 17636)]