20105295

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 38759424

約数和(自身を除く): 18654129

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 61, 73, 105, 129, 183, 215, 219, 301, 305, 365, 427, 511, 645, 903, 915, 1095, 1281, 1505, 1533, 2135, 2555, 2623, 3139, 4453, 4515, 6405, 7665, 7869, 9417, 13115, 13359, 15695, 18361, 21973, 22265, 31171, 39345, 47085, 55083, 65919, 66795, 91805, 93513, 109865, 155855, 191479, 275415, 329595, 467565, 574437, 957395, 1340353, 2872185, 4021059, 6701765, 20105295]

約数ペア:

[(1, 20105295), (3, 6701765), (5, 4021059), (7, 2872185), (15, 1340353), (21, 957395), (35, 574437), (43, 467565), (61, 329595), (73, 275415), (105, 191479), (129, 155855), (183, 109865), (215, 93513), (219, 91805), (301, 66795), (305, 65919), (365, 55083), (427, 47085), (511, 39345), (645, 31171), (903, 22265), (915, 21973), (1095, 18361), (1281, 15695), (1505, 13359), (1533, 13115), (2135, 9417), (2555, 7869), (2623, 7665), (3139, 6405), (4453, 4515)]