20791080

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 224

約数和(自身を含む): 75548160

約数和(自身を除く): 54757080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 27, 30, 31, 36, 40, 45, 46, 54, 60, 62, 69, 72, 81, 90, 92, 93, 108, 115, 120, 124, 135, 138, 155, 162, 180, 184, 186, 207, 216, 230, 243, 248, 270, 276, 279, 310, 324, 345, 360, 372, 405, 414, 460, 465, 486, 540, 552, 558, 620, 621, 648, 690, 713, 729, 744, 810, 828, 837, 920, 930, 972, 1035, 1080, 1116, 1215, 1240, 1242, 1380, 1395, 1426, 1458, 1620, 1656, 1674, 1860, 1863, 1944, 2070, 2139, 2232, 2430, 2484, 2511, 2760, 2790, 2852, 2916, 3105, 3240, 3348, 3565, 3645, 3720, 3726, 4140, 4185, 4278, 4860, 4968, 5022, 5580, 5589, 5704, 5832, 6210, 6417, 6696, 7130, 7290, 7452, 7533, 8280, 8370, 8556, 9315, 9720, 10044, 10695, 11160, 11178, 12420, 12555, 12834, 14260, 14580, 14904, 15066, 16740, 16767, 17112, 18630, 19251, 20088, 21390, 22356, 22599, 24840, 25110, 25668, 27945, 28520, 29160, 30132, 32085, 33480, 33534, 37260, 37665, 38502, 42780, 44712, 45198, 50220, 51336, 55890, 57753, 60264, 64170, 67068, 74520, 75330, 77004, 83835, 85560, 90396, 96255, 100440, 111780, 112995, 115506, 128340, 134136, 150660, 154008, 167670, 173259, 180792, 192510, 223560, 225990, 231012, 256680, 288765, 301320, 335340, 346518, 385020, 451980, 462024, 519777, 577530, 670680, 693036, 770040, 866295, 903960, 1039554, 1155060, 1386072, 1732590, 2079108, 2310120, 2598885, 3465180, 4158216, 5197770, 6930360, 10395540, 20791080]

約数ペア:

[(1, 20791080), (2, 10395540), (3, 6930360), (4, 5197770), (5, 4158216), (6, 3465180), (8, 2598885), (9, 2310120), (10, 2079108), (12, 1732590), (15, 1386072), (18, 1155060), (20, 1039554), (23, 903960), (24, 866295), (27, 770040), (30, 693036), (31, 670680), (36, 577530), (40, 519777), (45, 462024), (46, 451980), (54, 385020), (60, 346518), (62, 335340), (69, 301320), (72, 288765), (81, 256680), (90, 231012), (92, 225990), (93, 223560), (108, 192510), (115, 180792), (120, 173259), (124, 167670), (135, 154008), (138, 150660), (155, 134136), (162, 128340), (180, 115506), (184, 112995), (186, 111780), (207, 100440), (216, 96255), (230, 90396), (243, 85560), (248, 83835), (270, 77004), (276, 75330), (279, 74520), (310, 67068), (324, 64170), (345, 60264), (360, 57753), (372, 55890), (405, 51336), (414, 50220), (460, 45198), (465, 44712), (486, 42780), (540, 38502), (552, 37665), (558, 37260), (620, 33534), (621, 33480), (648, 32085), (690, 30132), (713, 29160), (729, 28520), (744, 27945), (810, 25668), (828, 25110), (837, 24840), (920, 22599), (930, 22356), (972, 21390), (1035, 20088), (1080, 19251), (1116, 18630), (1215, 17112), (1240, 16767), (1242, 16740), (1380, 15066), (1395, 14904), (1426, 14580), (1458, 14260), (1620, 12834), (1656, 12555), (1674, 12420), (1860, 11178), (1863, 11160), (1944, 10695), (2070, 10044), (2139, 9720), (2232, 9315), (2430, 8556), (2484, 8370), (2511, 8280), (2760, 7533), (2790, 7452), (2852, 7290), (2916, 7130), (3105, 6696), (3240, 6417), (3348, 6210), (3565, 5832), (3645, 5704), (3720, 5589), (3726, 5580), (4140, 5022), (4185, 4968), (4278, 4860)]