1728821680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{19991}}^1$

素因数の和:20074

約数の個数: 80

約数和(自身を含む): 4283725824

約数和(自身を除く): 2554904144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 47, 80, 92, 94, 115, 184, 188, 230, 235, 368, 376, 460, 470, 752, 920, 940, 1081, 1840, 1880, 2162, 3760, 4324, 5405, 8648, 10810, 17296, 19991, 21620, 39982, 43240, 79964, 86480, 99955, 159928, 199910, 319856, 399820, 459793, 799640, 919586, 939577, 1599280, 1839172, 1879154, 2298965, 3678344, 3758308, 4597930, 4697885, 7356688, 7516616, 9195860, 9395770, 15033232, 18391720, 18791540, 21610271, 36783440, 37583080, 43220542, 75166160, 86441084, 108051355, 172882168, 216102710, 345764336, 432205420, 864410840, 1728821680]

約数ペア:

[(1, 1728821680), (2, 864410840), (4, 432205420), (5, 345764336), (8, 216102710), (10, 172882168), (16, 108051355), (20, 86441084), (23, 75166160), (40, 43220542), (46, 37583080), (47, 36783440), (80, 21610271), (92, 18791540), (94, 18391720), (115, 15033232), (184, 9395770), (188, 9195860), (230, 7516616), (235, 7356688), (368, 4697885), (376, 4597930), (460, 3758308), (470, 3678344), (752, 2298965), (920, 1879154), (940, 1839172), (1081, 1599280), (1840, 939577), (1880, 919586), (2162, 799640), (3760, 459793), (4324, 399820), (5405, 319856), (8648, 199910), (10810, 159928), (17296, 99955), (19991, 86480), (21620, 79964), (39982, 43240)]