21271356

素因数分解:

$2^2\times 3^3\times {\mathrm{89}}^1\times {\mathrm{2213}}^1$

素因数の和:2315

約数の個数: 48

約数和(自身を含む): 55792800

約数和(自身を除く): 34521444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 89, 108, 178, 267, 356, 534, 801, 1068, 1602, 2213, 2403, 3204, 4426, 4806, 6639, 8852, 9612, 13278, 19917, 26556, 39834, 59751, 79668, 119502, 196957, 239004, 393914, 590871, 787828, 1181742, 1772613, 2363484, 3545226, 5317839, 7090452, 10635678, 21271356]

約数ペア:

[(1, 21271356), (2, 10635678), (3, 7090452), (4, 5317839), (6, 3545226), (9, 2363484), (12, 1772613), (18, 1181742), (27, 787828), (36, 590871), (54, 393914), (89, 239004), (108, 196957), (178, 119502), (267, 79668), (356, 59751), (534, 39834), (801, 26556), (1068, 19917), (1602, 13278), (2213, 9612), (2403, 8852), (3204, 6639), (4426, 4806)]