21452807960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2861}}^1\times {\mathrm{11027}}^1$

素因数の和:13916

約数の個数: 64

約数和(自身を含む): 51130660320

約数和(自身を除く): 29677852360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 2861, 5722, 11027, 11444, 14305, 22054, 22888, 28610, 44108, 48637, 55135, 57220, 88216, 97274, 110270, 114440, 187459, 194548, 220540, 243185, 374918, 389096, 441080, 486370, 749836, 937295, 972740, 1499672, 1874590, 1945480, 3749180, 7498360, 31548247, 63096494, 126192988, 157741235, 252385976, 315482470, 536320199, 630964940, 1072640398, 1261929880, 2145280796, 2681600995, 4290561592, 5363201990, 10726403980, 21452807960]

約数ペア:

[(1, 21452807960), (2, 10726403980), (4, 5363201990), (5, 4290561592), (8, 2681600995), (10, 2145280796), (17, 1261929880), (20, 1072640398), (34, 630964940), (40, 536320199), (68, 315482470), (85, 252385976), (136, 157741235), (170, 126192988), (340, 63096494), (680, 31548247), (2861, 7498360), (5722, 3749180), (11027, 1945480), (11444, 1874590), (14305, 1499672), (22054, 972740), (22888, 937295), (28610, 749836), (44108, 486370), (48637, 441080), (55135, 389096), (57220, 374918), (88216, 243185), (97274, 220540), (110270, 194548), (114440, 187459)]