81431805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{353}}^1$

素因数の和:407

約数の個数: 64

約数和(自身を含む): 161763840

約数和(自身を除く): 80332035

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 169, 195, 273, 353, 455, 507, 845, 1059, 1183, 1365, 1765, 2197, 2471, 2535, 3549, 4589, 5295, 5915, 6591, 7413, 10985, 12355, 13767, 15379, 17745, 22945, 32123, 32955, 37065, 46137, 59657, 68835, 76895, 96369, 160615, 178971, 230685, 298285, 417599, 481845, 775541, 894855, 1252797, 2087995, 2326623, 3877705, 5428787, 6263985, 11633115, 16286361, 27143935, 81431805]

約数ペア:

[(1, 81431805), (3, 27143935), (5, 16286361), (7, 11633115), (13, 6263985), (15, 5428787), (21, 3877705), (35, 2326623), (39, 2087995), (65, 1252797), (91, 894855), (105, 775541), (169, 481845), (195, 417599), (273, 298285), (353, 230685), (455, 178971), (507, 160615), (845, 96369), (1059, 76895), (1183, 68835), (1365, 59657), (1765, 46137), (2197, 37065), (2471, 32955), (2535, 32123), (3549, 22945), (4589, 17745), (5295, 15379), (5915, 13767), (6591, 12355), (7413, 10985)]