21096789

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 33521664

約数和(自身を除く): 12424875

約数列:

[1, 3, 7, 21, 43, 61, 129, 183, 301, 383, 427, 903, 1149, 1281, 2623, 2681, 7869, 8043, 16469, 18361, 23363, 49407, 55083, 70089, 115283, 163541, 345849, 490623, 1004609, 3013827, 7032263, 21096789]

約数ペア:

[(1, 21096789), (3, 7032263), (7, 3013827), (21, 1004609), (43, 490623), (61, 345849), (129, 163541), (183, 115283), (301, 70089), (383, 55083), (427, 49407), (903, 23363), (1149, 18361), (1281, 16469), (2623, 8043), (2681, 7869)]