21810117

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{607}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13210683

約数列:

[1, 3, 7, 21, 29, 59, 87, 177, 203, 413, 607, 609, 1239, 1711, 1821, 4249, 5133, 11977, 12747, 17603, 35813, 35931, 52809, 107439, 123221, 250691, 369663, 752073, 1038577, 3115731, 7270039, 21810117]

約数ペア:

[(1, 21810117), (3, 7270039), (7, 3115731), (21, 1038577), (29, 752073), (59, 369663), (87, 250691), (177, 123221), (203, 107439), (413, 52809), (607, 35931), (609, 35813), (1239, 17603), (1711, 12747), (1821, 11977), (4249, 5133)]