51720405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{947}}^1$

素因数の和:1297

約数の個数: 32

約数和(自身を含む): 90643968

約数和(自身を除く): 38923563

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 331, 947, 993, 1655, 2841, 3641, 4735, 4965, 10417, 10923, 14205, 18205, 31251, 52085, 54615, 156255, 313457, 940371, 1567285, 3448027, 4701855, 10344081, 17240135, 51720405]

約数ペア:

[(1, 51720405), (3, 17240135), (5, 10344081), (11, 4701855), (15, 3448027), (33, 1567285), (55, 940371), (165, 313457), (331, 156255), (947, 54615), (993, 52085), (1655, 31251), (2841, 18205), (3641, 14205), (4735, 10923), (4965, 10417)]