28169765

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 40555728

約数和(自身を除く): 12385963

約数列:

[1, 5, 13, 17, 37, 53, 65, 85, 169, 185, 221, 265, 481, 629, 689, 845, 901, 1105, 1961, 2405, 2873, 3145, 3445, 4505, 6253, 8177, 8957, 9805, 11713, 14365, 25493, 31265, 33337, 40885, 44785, 58565, 106301, 127465, 152269, 166685, 331409, 433381, 531505, 761345, 1657045, 2166905, 5633953, 28169765]

約数ペア:

[(1, 28169765), (5, 5633953), (13, 2166905), (17, 1657045), (37, 761345), (53, 531505), (65, 433381), (85, 331409), (169, 166685), (185, 152269), (221, 127465), (265, 106301), (481, 58565), (629, 44785), (689, 40885), (845, 33337), (901, 31265), (1105, 25493), (1961, 14365), (2405, 11713), (2873, 9805), (3145, 8957), (3445, 8177), (4505, 6253)]