19801620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4783}}^1$

素因数の和:4821

約数の個数: 72

約数和(自身を含む): 62689536

約数和(自身を除く): 42887916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4783, 9566, 14349, 19132, 23915, 28698, 43047, 47830, 57396, 71745, 86094, 95660, 110009, 143490, 172188, 215235, 220018, 286980, 330027, 430470, 440036, 550045, 660054, 860940, 990081, 1100090, 1320108, 1650135, 1980162, 2200180, 3300270, 3960324, 4950405, 6600540, 9900810, 19801620]

約数ペア:

[(1, 19801620), (2, 9900810), (3, 6600540), (4, 4950405), (5, 3960324), (6, 3300270), (9, 2200180), (10, 1980162), (12, 1650135), (15, 1320108), (18, 1100090), (20, 990081), (23, 860940), (30, 660054), (36, 550045), (45, 440036), (46, 430470), (60, 330027), (69, 286980), (90, 220018), (92, 215235), (115, 172188), (138, 143490), (180, 110009), (207, 95660), (230, 86094), (276, 71745), (345, 57396), (414, 47830), (460, 43047), (690, 28698), (828, 23915), (1035, 19132), (1380, 14349), (2070, 9566), (4140, 4783)]