21473892

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 59728032

約数和(自身を除く): 38254140

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 211, 257, 396, 422, 514, 633, 771, 844, 1028, 1266, 1542, 1899, 2313, 2321, 2532, 2827, 3084, 3798, 4626, 4642, 5654, 6963, 7596, 8481, 9252, 9284, 11308, 13926, 16962, 20889, 25443, 27852, 33924, 41778, 50886, 54227, 83556, 101772, 108454, 162681, 216908, 325362, 488043, 596497, 650724, 976086, 1192994, 1789491, 1952172, 2385988, 3578982, 5368473, 7157964, 10736946, 21473892]

約数ペア:

[(1, 21473892), (2, 10736946), (3, 7157964), (4, 5368473), (6, 3578982), (9, 2385988), (11, 1952172), (12, 1789491), (18, 1192994), (22, 976086), (33, 650724), (36, 596497), (44, 488043), (66, 325362), (99, 216908), (132, 162681), (198, 108454), (211, 101772), (257, 83556), (396, 54227), (422, 50886), (514, 41778), (633, 33924), (771, 27852), (844, 25443), (1028, 20889), (1266, 16962), (1542, 13926), (1899, 11308), (2313, 9284), (2321, 9252), (2532, 8481), (2827, 7596), (3084, 6963), (3798, 5654), (4626, 4642)]