21161763

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 17545437

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 71, 83, 133, 171, 189, 213, 249, 399, 497, 513, 581, 639, 747, 1197, 1349, 1491, 1577, 1743, 1917, 2241, 3591, 4047, 4473, 4731, 5229, 5893, 9443, 11039, 12141, 13419, 14193, 15687, 17679, 28329, 33117, 36423, 41251, 42579, 53037, 84987, 99351, 111967, 123753, 159111, 254961, 298053, 335901, 371259, 783769, 1007703, 1113777, 2351307, 3023109, 7053921, 21161763]

約数ペア:

[(1, 21161763), (3, 7053921), (7, 3023109), (9, 2351307), (19, 1113777), (21, 1007703), (27, 783769), (57, 371259), (63, 335901), (71, 298053), (83, 254961), (133, 159111), (171, 123753), (189, 111967), (213, 99351), (249, 84987), (399, 53037), (497, 42579), (513, 41251), (581, 36423), (639, 33117), (747, 28329), (1197, 17679), (1349, 15687), (1491, 14193), (1577, 13419), (1743, 12141), (1917, 11039), (2241, 9443), (3591, 5893), (4047, 5229), (4473, 4731)]