21239895

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 34997760

約数和(自身を除く): 13757865

約数列:

[1, 3, 5, 15, 61, 139, 167, 183, 305, 417, 501, 695, 835, 915, 2085, 2505, 8479, 10187, 23213, 25437, 30561, 42395, 50935, 69639, 116065, 127185, 152805, 348195, 1415993, 4247979, 7079965, 21239895]

約数ペア:

[(1, 21239895), (3, 7079965), (5, 4247979), (15, 1415993), (61, 348195), (139, 152805), (167, 127185), (183, 116065), (305, 69639), (417, 50935), (501, 42395), (695, 30561), (835, 25437), (915, 23213), (2085, 10187), (2505, 8479)]