215536209

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{3943}}^1$

素因数の和:4109

約数の個数: 32

約数和(自身を含む): 348334080

約数和(自身を除く): 132797871

約数列:

[1, 3, 7, 19, 21, 57, 133, 137, 399, 411, 959, 2603, 2877, 3943, 7809, 11829, 18221, 27601, 54663, 74917, 82803, 224751, 524419, 540191, 1573257, 1620573, 3781337, 10263629, 11344011, 30790887, 71845403, 215536209]

約数ペア:

[(1, 215536209), (3, 71845403), (7, 30790887), (19, 11344011), (21, 10263629), (57, 3781337), (133, 1620573), (137, 1573257), (399, 540191), (411, 524419), (959, 224751), (2603, 82803), (2877, 74917), (3943, 54663), (7809, 27601), (11829, 18221)]