20611143

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 36491520

約数和(自身を除く): 15880377

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 67, 133, 171, 201, 257, 399, 469, 603, 771, 1197, 1273, 1407, 1799, 2313, 3819, 4221, 4883, 5397, 8911, 11457, 14649, 16191, 17219, 26733, 34181, 43947, 51657, 80199, 102543, 120533, 154971, 307629, 327161, 361599, 981483, 1084797, 2290127, 2944449, 6870381, 20611143]

約数ペア:

[(1, 20611143), (3, 6870381), (7, 2944449), (9, 2290127), (19, 1084797), (21, 981483), (57, 361599), (63, 327161), (67, 307629), (133, 154971), (171, 120533), (201, 102543), (257, 80199), (399, 51657), (469, 43947), (603, 34181), (771, 26733), (1197, 17219), (1273, 16191), (1407, 14649), (1799, 11457), (2313, 8911), (3819, 5397), (4221, 4883)]