81745680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:349

約数の個数: 160

約数和(自身を含む): 269982720

約数和(自身を除く): 188237040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 59, 60, 69, 80, 92, 115, 118, 120, 138, 177, 184, 230, 236, 240, 251, 276, 295, 345, 354, 368, 460, 472, 502, 552, 590, 690, 708, 753, 885, 920, 944, 1004, 1104, 1180, 1255, 1357, 1380, 1416, 1506, 1770, 1840, 2008, 2360, 2510, 2714, 2760, 2832, 3012, 3540, 3765, 4016, 4071, 4720, 5020, 5428, 5520, 5773, 6024, 6785, 7080, 7530, 8142, 10040, 10856, 11546, 12048, 13570, 14160, 14809, 15060, 16284, 17319, 20080, 20355, 21712, 23092, 27140, 28865, 29618, 30120, 32568, 34638, 40710, 44427, 46184, 54280, 57730, 59236, 60240, 65136, 69276, 74045, 81420, 86595, 88854, 92368, 108560, 115460, 118472, 138552, 148090, 162840, 173190, 177708, 222135, 230920, 236944, 277104, 296180, 325680, 340607, 346380, 355416, 444270, 461840, 592360, 681214, 692760, 710832, 888540, 1021821, 1184720, 1362428, 1385520, 1703035, 1777080, 2043642, 2724856, 3406070, 3554160, 4087284, 5109105, 5449712, 6812140, 8174568, 10218210, 13624280, 16349136, 20436420, 27248560, 40872840, 81745680]

約数ペア:

[(1, 81745680), (2, 40872840), (3, 27248560), (4, 20436420), (5, 16349136), (6, 13624280), (8, 10218210), (10, 8174568), (12, 6812140), (15, 5449712), (16, 5109105), (20, 4087284), (23, 3554160), (24, 3406070), (30, 2724856), (40, 2043642), (46, 1777080), (48, 1703035), (59, 1385520), (60, 1362428), (69, 1184720), (80, 1021821), (92, 888540), (115, 710832), (118, 692760), (120, 681214), (138, 592360), (177, 461840), (184, 444270), (230, 355416), (236, 346380), (240, 340607), (251, 325680), (276, 296180), (295, 277104), (345, 236944), (354, 230920), (368, 222135), (460, 177708), (472, 173190), (502, 162840), (552, 148090), (590, 138552), (690, 118472), (708, 115460), (753, 108560), (885, 92368), (920, 88854), (944, 86595), (1004, 81420), (1104, 74045), (1180, 69276), (1255, 65136), (1357, 60240), (1380, 59236), (1416, 57730), (1506, 54280), (1770, 46184), (1840, 44427), (2008, 40710), (2360, 34638), (2510, 32568), (2714, 30120), (2760, 29618), (2832, 28865), (3012, 27140), (3540, 23092), (3765, 21712), (4016, 20355), (4071, 20080), (4720, 17319), (5020, 16284), (5428, 15060), (5520, 14809), (5773, 14160), (6024, 13570), (6785, 12048), (7080, 11546), (7530, 10856), (8142, 10040)]