28013920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1447}}^1$

素因数の和:1484

約数の個数: 72

約数和(自身を含む): 72796752

約数和(自身を除く): 44782832

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1447, 1760, 1936, 2420, 2894, 3872, 4840, 5788, 7235, 9680, 11576, 14470, 15917, 19360, 23152, 28940, 31834, 46304, 57880, 63668, 79585, 115760, 127336, 159170, 175087, 231520, 254672, 318340, 350174, 509344, 636680, 700348, 875435, 1273360, 1400696, 1750870, 2546720, 2801392, 3501740, 5602784, 7003480, 14006960, 28013920]

約数ペア:

[(1, 28013920), (2, 14006960), (4, 7003480), (5, 5602784), (8, 3501740), (10, 2801392), (11, 2546720), (16, 1750870), (20, 1400696), (22, 1273360), (32, 875435), (40, 700348), (44, 636680), (55, 509344), (80, 350174), (88, 318340), (110, 254672), (121, 231520), (160, 175087), (176, 159170), (220, 127336), (242, 115760), (352, 79585), (440, 63668), (484, 57880), (605, 46304), (880, 31834), (968, 28940), (1210, 23152), (1447, 19360), (1760, 15917), (1936, 14470), (2420, 11576), (2894, 9680), (3872, 7235), (4840, 5788)]